diff --git a/package-lock.json b/package-lock.json
index db4e559..fc7a449 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,6 +4,15 @@
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
+    "@samverschueren/stream-to-observable": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/@samverschueren/stream-to-observable/-/stream-to-observable-0.3.0.tgz",
+      "integrity": "sha512-MI4Xx6LHs4Webyvi6EbspgyAb4D2Q2VtnCQ1blOJcoLS6mVa8lNN2rkIy1CVxfTUpoyIbCTkXES1rLXztFD1lg==",
+      "dev": true,
+      "requires": {
+        "any-observable": "^0.3.0"
+      }
+    },
     "abab": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/abab/-/abab-1.0.4.tgz",
@@ -135,6 +144,12 @@
         "color-convert": "^1.9.0"
       }
     },
+    "any-observable": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/any-observable/-/any-observable-0.3.0.tgz",
+      "integrity": "sha512-/FQM1EDkTsf63Ub2C6O7GuYFDsSXUwsaZDurV0np41ocwq0jthUAYCmhBX9f+KwlaCgIuWyr/4WlUQUBfKfZog==",
+      "dev": true
+    },
     "anymatch": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/anymatch/-/anymatch-1.3.2.tgz",
@@ -2046,6 +2061,44 @@
         "restore-cursor": "^2.0.0"
       }
     },
+    "cli-truncate": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/cli-truncate/-/cli-truncate-0.2.1.tgz",
+      "integrity": "sha1-nxXPuwcFAFNpIWxiasfQWrkN1XQ=",
+      "dev": true,
+      "requires": {
+        "slice-ansi": "0.0.4",
+        "string-width": "^1.0.1"
+      },
+      "dependencies": {
+        "is-fullwidth-code-point": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz",
+          "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
+          "dev": true,
+          "requires": {
+            "number-is-nan": "^1.0.0"
+          }
+        },
+        "slice-ansi": {
+          "version": "0.0.4",
+          "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz",
+          "integrity": "sha1-7b+JA/ZvfOL46v1s7tZeJkyDGzU=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+          "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+          "dev": true,
+          "requires": {
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
+          }
+        }
+      }
+    },
     "cli-width": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
@@ -2650,6 +2703,12 @@
         "assert-plus": "^1.0.0"
       }
     },
+    "date-fns": {
+      "version": "1.29.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-1.29.0.tgz",
+      "integrity": "sha512-lbTXWZ6M20cWH8N9S6afb0SBm6tMk+uUg6z3MqHPKE9atmsY3kJkTm8vKe93izJ2B2+q5MV990sM2CHgtAZaOw==",
+      "dev": true
+    },
     "date-now": {
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/date-now/-/date-now-0.1.4.tgz",
@@ -2673,6 +2732,12 @@
       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
       "integrity": "sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU="
     },
+    "dedent": {
+      "version": "0.7.0",
+      "resolved": "https://registry.npmjs.org/dedent/-/dedent-0.7.0.tgz",
+      "integrity": "sha1-JJXduvbrh0q7Dhvp3yLS5aVEMmw=",
+      "dev": true
+    },
     "deep-equal": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/deep-equal/-/deep-equal-1.0.1.tgz",
@@ -2975,6 +3040,12 @@
       "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.65.tgz",
       "integrity": "sha512-tyGr+wh2c/JYBVMeflKpZ3ricwtBPyVBMtRNxYGObl7TP5bAeupgz4VZnBzQSFleZViXYTws1yZtKKFQYZyiYw=="
     },
+    "elegant-spinner": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/elegant-spinner/-/elegant-spinner-1.0.1.tgz",
+      "integrity": "sha1-2wQ1IcldfjA/2PNFvtwzSc+wcp4=",
+      "dev": true
+    },
     "elliptic": {
       "version": "6.4.1",
       "resolved": "https://registry.npmjs.org/elliptic/-/elliptic-6.4.1.tgz",
@@ -3552,6 +3623,12 @@
         "strip-eof": "^1.0.0"
       }
     },
+    "exit-hook": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/exit-hook/-/exit-hook-1.1.1.tgz",
+      "integrity": "sha1-8FyiM7SMBdVP/wd2XfhQfpXAL/g=",
+      "dev": true
+    },
     "expand-brackets": {
       "version": "0.1.5",
       "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-0.1.5.tgz",
@@ -3810,6 +3887,12 @@
         "pkg-dir": "^2.0.0"
       }
     },
+    "find-parent-dir": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/find-parent-dir/-/find-parent-dir-0.3.0.tgz",
+      "integrity": "sha1-M8RLQpqysvBkYpnF+fcY83b/jVQ=",
+      "dev": true
+    },
     "find-up": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/find-up/-/find-up-2.1.0.tgz",
@@ -4390,6 +4473,12 @@
       "resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-1.0.3.tgz",
       "integrity": "sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w=="
     },
+    "get-own-enumerable-property-symbols": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/get-own-enumerable-property-symbols/-/get-own-enumerable-property-symbols-2.0.1.tgz",
+      "integrity": "sha512-TtY/sbOemiMKPRUDDanGCSgBYe7Mf0vbRsWnBZ+9yghpZ1MvcpSpuZFjHdEeY/LZjZy0vdLjS77L6HosisFiug==",
+      "dev": true
+    },
     "get-stdin": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/get-stdin/-/get-stdin-4.0.1.tgz",
@@ -4877,6 +4966,31 @@
       "resolved": "https://registry.npmjs.org/https-browserify/-/https-browserify-1.0.0.tgz",
       "integrity": "sha1-7AbBDgo0wPL68Zn3/X/Hj//QPHM="
     },
+    "husky": {
+      "version": "0.14.3",
+      "resolved": "https://registry.npmjs.org/husky/-/husky-0.14.3.tgz",
+      "integrity": "sha512-e21wivqHpstpoiWA/Yi8eFti8E+sQDSS53cpJsPptPs295QTOQR0ZwnHo2TXy1XOpZFD9rPOd3NpmqTK6uMLJA==",
+      "dev": true,
+      "requires": {
+        "is-ci": "^1.0.10",
+        "normalize-path": "^1.0.0",
+        "strip-indent": "^2.0.0"
+      },
+      "dependencies": {
+        "normalize-path": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/normalize-path/-/normalize-path-1.0.0.tgz",
+          "integrity": "sha1-MtDkcvkf80VwHBWoMRAY07CpA3k=",
+          "dev": true
+        },
+        "strip-indent": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-2.0.0.tgz",
+          "integrity": "sha1-XvjbKV0B5u1sv3qrlpmNeCJSe2g=",
+          "dev": true
+        }
+      }
+    },
     "iconv-lite": {
       "version": "0.4.24",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
@@ -5204,6 +5318,15 @@
       "resolved": "http://registry.npmjs.org/is-obj/-/is-obj-1.0.1.tgz",
       "integrity": "sha1-PkcprB9f3gJc19g6iW2rn09n2w8="
     },
+    "is-observable": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/is-observable/-/is-observable-1.1.0.tgz",
+      "integrity": "sha512-NqCa4Sa2d+u7BWc6CukaObG3Fh+CU9bvixbpcXYhy2VvYS7vVGIdAgnIS5Ks3A/cqk4rebLJ9s8zBstT2aKnIA==",
+      "dev": true,
+      "requires": {
+        "symbol-observable": "^1.1.0"
+      }
+    },
     "is-path-cwd": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/is-path-cwd/-/is-path-cwd-1.0.0.tgz",
@@ -5273,6 +5396,12 @@
         "has": "^1.0.1"
       }
     },
+    "is-regexp": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/is-regexp/-/is-regexp-1.0.0.tgz",
+      "integrity": "sha1-/S2INUXEa6xaYz57mgnof6LLUGk=",
+      "dev": true
+    },
     "is-resolvable": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/is-resolvable/-/is-resolvable-1.1.0.tgz",
@@ -5574,6 +5703,12 @@
         "jest-util": "^20.0.3"
       }
     },
+    "jest-get-type": {
+      "version": "22.4.3",
+      "resolved": "https://registry.npmjs.org/jest-get-type/-/jest-get-type-22.4.3.tgz",
+      "integrity": "sha512-/jsz0Y+V29w1chdXVygEKSz2nBoHoYqNShPe+QgxSNjAuP1i8+k4LbQNrfoliKej0P45sivkSCh7yiD6ubHS3w==",
+      "dev": true
+    },
     "jest-haste-map": {
       "version": "20.0.5",
       "resolved": "https://registry.npmjs.org/jest-haste-map/-/jest-haste-map-20.0.5.tgz",
@@ -5796,6 +5931,12 @@
       "resolved": "https://registry.npmjs.org/json-loader/-/json-loader-0.5.7.tgz",
       "integrity": "sha512-QLPs8Dj7lnf3e3QYS1zkCo+4ZwqOiF9d/nZnYozTISxXWCfNs9yuky5rJw4/W34s7POaNlbZmQGaB5NiXCbP4w=="
     },
+    "json-parse-better-errors": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/json-parse-better-errors/-/json-parse-better-errors-1.0.2.tgz",
+      "integrity": "sha512-mrqyZKfX5EhL7hvqcV6WG1yYjnjeuYDzDhhcAAUrq8Po85NBQBJP+ZDUT75qZQ98IkUoBqdkExkukOU7Ts2wrw==",
+      "dev": true
+    },
     "json-schema": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
@@ -5914,6 +6055,569 @@
         "type-check": "~0.3.2"
       }
     },
+    "lint-staged": {
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/lint-staged/-/lint-staged-7.2.2.tgz",
+      "integrity": "sha512-BWT3kx242hq5oaKJ8QiazPeHwJnEXImvjmgZfjljMI5HX6RrTxI3cTJXywre6GNafMONCD/suFnEiFmC69Gscg==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.3.1",
+        "commander": "^2.14.1",
+        "cosmiconfig": "^5.0.2",
+        "debug": "^3.1.0",
+        "dedent": "^0.7.0",
+        "execa": "^0.9.0",
+        "find-parent-dir": "^0.3.0",
+        "is-glob": "^4.0.0",
+        "is-windows": "^1.0.2",
+        "jest-validate": "^23.5.0",
+        "listr": "^0.14.1",
+        "lodash": "^4.17.5",
+        "log-symbols": "^2.2.0",
+        "micromatch": "^3.1.8",
+        "npm-which": "^3.0.1",
+        "p-map": "^1.1.1",
+        "path-is-inside": "^1.0.2",
+        "pify": "^3.0.0",
+        "please-upgrade-node": "^3.0.2",
+        "staged-git-files": "1.1.1",
+        "string-argv": "^0.0.2",
+        "stringify-object": "^3.2.2"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "arr-diff": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/arr-diff/-/arr-diff-4.0.0.tgz",
+          "integrity": "sha1-1kYQdP6/7HHn4VI1dhoyml3HxSA=",
+          "dev": true
+        },
+        "array-unique": {
+          "version": "0.3.2",
+          "resolved": "https://registry.npmjs.org/array-unique/-/array-unique-0.3.2.tgz",
+          "integrity": "sha1-qJS3XUvE9s1nnvMkSp/Y9Gri1Cg=",
+          "dev": true
+        },
+        "braces": {
+          "version": "2.3.2",
+          "resolved": "https://registry.npmjs.org/braces/-/braces-2.3.2.tgz",
+          "integrity": "sha512-aNdbnj9P8PjdXU4ybaWLK2IF3jc/EoDYbC7AazW6to3TRsfXxscC9UXOB5iDiEQrkyIbWp2SLQda4+QAa7nc3w==",
+          "dev": true,
+          "requires": {
+            "arr-flatten": "^1.1.0",
+            "array-unique": "^0.3.2",
+            "extend-shallow": "^2.0.1",
+            "fill-range": "^4.0.0",
+            "isobject": "^3.0.1",
+            "repeat-element": "^1.1.2",
+            "snapdragon": "^0.8.1",
+            "snapdragon-node": "^2.0.1",
+            "split-string": "^3.0.2",
+            "to-regex": "^3.0.1"
+          },
+          "dependencies": {
+            "extend-shallow": {
+              "version": "2.0.1",
+              "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
+              "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+              "dev": true,
+              "requires": {
+                "is-extendable": "^0.1.0"
+              }
+            }
+          }
+        },
+        "chalk": {
+          "version": "2.4.1",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "cosmiconfig": {
+          "version": "5.0.6",
+          "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-5.0.6.tgz",
+          "integrity": "sha512-6DWfizHriCrFWURP1/qyhsiFvYdlJzbCzmtFWh744+KyWsJo5+kPzUZZaMRSSItoYc0pxFX7gEO7ZC1/gN/7AQ==",
+          "dev": true,
+          "requires": {
+            "is-directory": "^0.3.1",
+            "js-yaml": "^3.9.0",
+            "parse-json": "^4.0.0"
+          }
+        },
+        "debug": {
+          "version": "3.2.5",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.5.tgz",
+          "integrity": "sha512-D61LaDQPQkxJ5AUM2mbSJRbPkNs/TmdmOeLAi1hgDkpDfIfetSrjmWhccwtuResSwMbACjx/xXQofvM9CE/aeg==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "esprima": {
+          "version": "4.0.1",
+          "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
+          "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
+          "dev": true
+        },
+        "execa": {
+          "version": "0.9.0",
+          "resolved": "https://registry.npmjs.org/execa/-/execa-0.9.0.tgz",
+          "integrity": "sha512-BbUMBiX4hqiHZUA5+JujIjNb6TyAlp2D5KLheMjMluwOuzcnylDL4AxZYLLn1n2AGB49eSWwyKvvEQoRpnAtmA==",
+          "dev": true,
+          "requires": {
+            "cross-spawn": "^5.0.1",
+            "get-stream": "^3.0.0",
+            "is-stream": "^1.1.0",
+            "npm-run-path": "^2.0.0",
+            "p-finally": "^1.0.0",
+            "signal-exit": "^3.0.0",
+            "strip-eof": "^1.0.0"
+          }
+        },
+        "expand-brackets": {
+          "version": "2.1.4",
+          "resolved": "https://registry.npmjs.org/expand-brackets/-/expand-brackets-2.1.4.tgz",
+          "integrity": "sha1-t3c14xXOMPa27/D4OwQVGiJEliI=",
+          "dev": true,
+          "requires": {
+            "debug": "^2.3.3",
+            "define-property": "^0.2.5",
+            "extend-shallow": "^2.0.1",
+            "posix-character-classes": "^0.1.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
+          },
+          "dependencies": {
+            "debug": {
+              "version": "2.6.9",
+              "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+              "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+              "dev": true,
+              "requires": {
+                "ms": "2.0.0"
+              }
+            },
+            "define-property": {
+              "version": "0.2.5",
+              "resolved": "https://registry.npmjs.org/define-property/-/define-property-0.2.5.tgz",
+              "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+              "dev": true,
+              "requires": {
+                "is-descriptor": "^0.1.0"
+              }
+            },
+            "extend-shallow": {
+              "version": "2.0.1",
+              "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
+              "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+              "dev": true,
+              "requires": {
+                "is-extendable": "^0.1.0"
+              }
+            },
+            "is-accessor-descriptor": {
+              "version": "0.1.6",
+              "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-0.1.6.tgz",
+              "integrity": "sha1-qeEss66Nh2cn7u84Q/igiXtcmNY=",
+              "dev": true,
+              "requires": {
+                "kind-of": "^3.0.2"
+              },
+              "dependencies": {
+                "kind-of": {
+                  "version": "3.2.2",
+                  "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
+                  "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+                  "dev": true,
+                  "requires": {
+                    "is-buffer": "^1.1.5"
+                  }
+                }
+              }
+            },
+            "is-data-descriptor": {
+              "version": "0.1.4",
+              "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-0.1.4.tgz",
+              "integrity": "sha1-C17mSDiOLIYCgueT8YVv7D8wG1Y=",
+              "dev": true,
+              "requires": {
+                "kind-of": "^3.0.2"
+              },
+              "dependencies": {
+                "kind-of": {
+                  "version": "3.2.2",
+                  "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
+                  "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+                  "dev": true,
+                  "requires": {
+                    "is-buffer": "^1.1.5"
+                  }
+                }
+              }
+            },
+            "is-descriptor": {
+              "version": "0.1.6",
+              "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-0.1.6.tgz",
+              "integrity": "sha512-avDYr0SB3DwO9zsMov0gKCESFYqCnE4hq/4z3TdUlukEy5t9C0YRq7HLrsN52NAcqXKaepeCD0n+B0arnVG3Hg==",
+              "dev": true,
+              "requires": {
+                "is-accessor-descriptor": "^0.1.6",
+                "is-data-descriptor": "^0.1.4",
+                "kind-of": "^5.0.0"
+              }
+            },
+            "kind-of": {
+              "version": "5.1.0",
+              "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-5.1.0.tgz",
+              "integrity": "sha512-NGEErnH6F2vUuXDh+OlbcKW7/wOcfdRHaZ7VWtqCztfHri/++YKmP51OdWeGPuqCOba6kk2OTe5d02VmTB80Pw==",
+              "dev": true
+            },
+            "ms": {
+              "version": "2.0.0",
+              "resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
+              "integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g=",
+              "dev": true
+            }
+          }
+        },
+        "extglob": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/extglob/-/extglob-2.0.4.tgz",
+          "integrity": "sha512-Nmb6QXkELsuBr24CJSkilo6UHHgbekK5UiZgfE6UHD3Eb27YC6oD+bhcT+tJ6cl8dmsgdQxnWlcry8ksBIBLpw==",
+          "dev": true,
+          "requires": {
+            "array-unique": "^0.3.2",
+            "define-property": "^1.0.0",
+            "expand-brackets": "^2.1.4",
+            "extend-shallow": "^2.0.1",
+            "fragment-cache": "^0.2.1",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.1"
+          },
+          "dependencies": {
+            "define-property": {
+              "version": "1.0.0",
+              "resolved": "https://registry.npmjs.org/define-property/-/define-property-1.0.0.tgz",
+              "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
+              "dev": true,
+              "requires": {
+                "is-descriptor": "^1.0.0"
+              }
+            },
+            "extend-shallow": {
+              "version": "2.0.1",
+              "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
+              "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+              "dev": true,
+              "requires": {
+                "is-extendable": "^0.1.0"
+              }
+            }
+          }
+        },
+        "fill-range": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-4.0.0.tgz",
+          "integrity": "sha1-1USBHUKPmOsGpj3EAtJAPDKMOPc=",
+          "dev": true,
+          "requires": {
+            "extend-shallow": "^2.0.1",
+            "is-number": "^3.0.0",
+            "repeat-string": "^1.6.1",
+            "to-regex-range": "^2.1.0"
+          },
+          "dependencies": {
+            "extend-shallow": {
+              "version": "2.0.1",
+              "resolved": "https://registry.npmjs.org/extend-shallow/-/extend-shallow-2.0.1.tgz",
+              "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
+              "dev": true,
+              "requires": {
+                "is-extendable": "^0.1.0"
+              }
+            }
+          }
+        },
+        "is-accessor-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-accessor-descriptor/-/is-accessor-descriptor-1.0.0.tgz",
+          "integrity": "sha512-m5hnHTkcVsPfqx3AKlyttIPb7J+XykHvJP2B9bZDjlhLIoEq4XoK64Vg7boZlVWYK6LUY94dYPEE7Lh0ZkZKcQ==",
+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
+        },
+        "is-data-descriptor": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/is-data-descriptor/-/is-data-descriptor-1.0.0.tgz",
+          "integrity": "sha512-jbRXy1FmtAoCjQkVmIVYwuuqDFUbaOeDjmed1tOGPrsMhtJA4rD9tkgA0F1qJ3gRFRXcHYVkdeaP50Q5rE/jLQ==",
+          "dev": true,
+          "requires": {
+            "kind-of": "^6.0.0"
+          }
+        },
+        "is-descriptor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/is-descriptor/-/is-descriptor-1.0.2.tgz",
+          "integrity": "sha512-2eis5WqQGV7peooDyLmNEPUrps9+SXX5c9pL3xEB+4e9HnGuDa7mB7kHxHw4CbqS9k1T2hOH3miL8n8WtiYVtg==",
+          "dev": true,
+          "requires": {
+            "is-accessor-descriptor": "^1.0.0",
+            "is-data-descriptor": "^1.0.0",
+            "kind-of": "^6.0.2"
+          }
+        },
+        "is-extglob": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/is-extglob/-/is-extglob-2.1.1.tgz",
+          "integrity": "sha1-qIwCU1eR8C7TfHahueqXc8gz+MI=",
+          "dev": true
+        },
+        "is-glob": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/is-glob/-/is-glob-4.0.0.tgz",
+          "integrity": "sha1-lSHHaEXMJhCoUgPd8ICpWML/q8A=",
+          "dev": true,
+          "requires": {
+            "is-extglob": "^2.1.1"
+          }
+        },
+        "is-number": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/is-number/-/is-number-3.0.0.tgz",
+          "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
+          "dev": true,
+          "requires": {
+            "kind-of": "^3.0.2"
+          },
+          "dependencies": {
+            "kind-of": {
+              "version": "3.2.2",
+              "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
+              "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+              "dev": true,
+              "requires": {
+                "is-buffer": "^1.1.5"
+              }
+            }
+          }
+        },
+        "isobject": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8=",
+          "dev": true
+        },
+        "jest-validate": {
+          "version": "23.6.0",
+          "resolved": "https://registry.npmjs.org/jest-validate/-/jest-validate-23.6.0.tgz",
+          "integrity": "sha512-OFKapYxe72yz7agrDAWi8v2WL8GIfVqcbKRCLbRG9PAxtzF9b1SEDdTpytNDN12z2fJynoBwpMpvj2R39plI2A==",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.0.1",
+            "jest-get-type": "^22.1.0",
+            "leven": "^2.1.0",
+            "pretty-format": "^23.6.0"
+          }
+        },
+        "js-yaml": {
+          "version": "3.12.0",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
+          "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        },
+        "kind-of": {
+          "version": "6.0.2",
+          "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-6.0.2.tgz",
+          "integrity": "sha512-s5kLOcnH0XqDO+FvuaLX8DDjZ18CGFk7VygH40QoKPUQhW4e2rvM0rwUq0t8IQDOwYSeLK01U90OjzBTme2QqA==",
+          "dev": true
+        },
+        "micromatch": {
+          "version": "3.1.10",
+          "resolved": "https://registry.npmjs.org/micromatch/-/micromatch-3.1.10.tgz",
+          "integrity": "sha512-MWikgl9n9M3w+bpsY3He8L+w9eF9338xRl8IAO5viDizwSzziFEyUzo2xrrloB64ADbTf8uA8vRqqttDTOmccg==",
+          "dev": true,
+          "requires": {
+            "arr-diff": "^4.0.0",
+            "array-unique": "^0.3.2",
+            "braces": "^2.3.1",
+            "define-property": "^2.0.2",
+            "extend-shallow": "^3.0.2",
+            "extglob": "^2.0.4",
+            "fragment-cache": "^0.2.1",
+            "kind-of": "^6.0.2",
+            "nanomatch": "^1.2.9",
+            "object.pick": "^1.3.0",
+            "regex-not": "^1.0.0",
+            "snapdragon": "^0.8.1",
+            "to-regex": "^3.0.2"
+          }
+        },
+        "ms": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
+          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg==",
+          "dev": true
+        },
+        "parse-json": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-4.0.0.tgz",
+          "integrity": "sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=",
+          "dev": true,
+          "requires": {
+            "error-ex": "^1.3.1",
+            "json-parse-better-errors": "^1.0.1"
+          }
+        },
+        "pify": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/pify/-/pify-3.0.0.tgz",
+          "integrity": "sha1-5aSs0sEB/fPZpNB/DbxNtJ3SgXY=",
+          "dev": true
+        },
+        "pretty-format": {
+          "version": "23.6.0",
+          "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-23.6.0.tgz",
+          "integrity": "sha512-zf9NV1NSlDLDjycnwm6hpFATCGl/K1lt0R/GdkAK2O5LN/rwJoB+Mh93gGJjut4YbmecbfgLWVGSTCr0Ewvvbw==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^3.0.0",
+            "ansi-styles": "^3.2.0"
+          }
+        }
+      }
+    },
+    "listr": {
+      "version": "0.14.2",
+      "resolved": "https://registry.npmjs.org/listr/-/listr-0.14.2.tgz",
+      "integrity": "sha512-vmaNJ1KlGuGWShHI35X/F8r9xxS0VTHh9GejVXwSN20fG5xpq3Jh4bJbnumoT6q5EDM/8/YP1z3YMtQbFmhuXw==",
+      "dev": true,
+      "requires": {
+        "@samverschueren/stream-to-observable": "^0.3.0",
+        "is-observable": "^1.1.0",
+        "is-promise": "^2.1.0",
+        "is-stream": "^1.1.0",
+        "listr-silent-renderer": "^1.1.1",
+        "listr-update-renderer": "^0.4.0",
+        "listr-verbose-renderer": "^0.4.0",
+        "p-map": "^1.1.1",
+        "rxjs": "^6.1.0"
+      }
+    },
+    "listr-silent-renderer": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/listr-silent-renderer/-/listr-silent-renderer-1.1.1.tgz",
+      "integrity": "sha1-kktaN1cVN3C/Go4/v3S4u/P5JC4=",
+      "dev": true
+    },
+    "listr-update-renderer": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/listr-update-renderer/-/listr-update-renderer-0.4.0.tgz",
+      "integrity": "sha1-NE2YDaLKLosUW6MFkI8yrj9MyKc=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "cli-truncate": "^0.2.1",
+        "elegant-spinner": "^1.0.1",
+        "figures": "^1.7.0",
+        "indent-string": "^3.0.0",
+        "log-symbols": "^1.0.2",
+        "log-update": "^1.0.2",
+        "strip-ansi": "^3.0.1"
+      },
+      "dependencies": {
+        "figures": {
+          "version": "1.7.0",
+          "resolved": "https://registry.npmjs.org/figures/-/figures-1.7.0.tgz",
+          "integrity": "sha1-y+Hjr/zxzUS4DK3+0o3Hk6lwHS4=",
+          "dev": true,
+          "requires": {
+            "escape-string-regexp": "^1.0.5",
+            "object-assign": "^4.1.0"
+          }
+        },
+        "indent-string": {
+          "version": "3.2.0",
+          "resolved": "https://registry.npmjs.org/indent-string/-/indent-string-3.2.0.tgz",
+          "integrity": "sha1-Sl/W0nzDMvN+VBmlBNu4NxBckok=",
+          "dev": true
+        },
+        "log-symbols": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-1.0.2.tgz",
+          "integrity": "sha1-N2/3tY6jCGoPCfrMdGF+ylAeGhg=",
+          "dev": true,
+          "requires": {
+            "chalk": "^1.0.0"
+          }
+        }
+      }
+    },
+    "listr-verbose-renderer": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/listr-verbose-renderer/-/listr-verbose-renderer-0.4.1.tgz",
+      "integrity": "sha1-ggb0z21S3cWCfl/RSYng6WWTOjU=",
+      "dev": true,
+      "requires": {
+        "chalk": "^1.1.3",
+        "cli-cursor": "^1.0.2",
+        "date-fns": "^1.27.2",
+        "figures": "^1.7.0"
+      },
+      "dependencies": {
+        "cli-cursor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
+          "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
+          "dev": true,
+          "requires": {
+            "restore-cursor": "^1.0.1"
+          }
+        },
+        "figures": {
+          "version": "1.7.0",
+          "resolved": "https://registry.npmjs.org/figures/-/figures-1.7.0.tgz",
+          "integrity": "sha1-y+Hjr/zxzUS4DK3+0o3Hk6lwHS4=",
+          "dev": true,
+          "requires": {
+            "escape-string-regexp": "^1.0.5",
+            "object-assign": "^4.1.0"
+          }
+        },
+        "onetime": {
+          "version": "1.1.0",
+          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "integrity": "sha1-ofeDj4MUxRbwXs78vEzP4EtO14k=",
+          "dev": true
+        },
+        "restore-cursor": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-1.0.1.tgz",
+          "integrity": "sha1-NGYfRohjJ/7SmRR5FSJS35LapUE=",
+          "dev": true,
+          "requires": {
+            "exit-hook": "^1.0.0",
+            "onetime": "^1.0.0"
+          }
+        }
+      }
+    },
     "load-json-file": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/load-json-file/-/load-json-file-1.1.0.tgz",
@@ -6053,6 +6757,71 @@
       "resolved": "https://registry.npmjs.org/lodash.uniq/-/lodash.uniq-4.5.0.tgz",
       "integrity": "sha1-0CJTc662Uq3BvILklFM5qEJ1R3M="
     },
+    "log-symbols": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/log-symbols/-/log-symbols-2.2.0.tgz",
+      "integrity": "sha512-VeIAFslyIerEJLXHziedo2basKbMKtTw3vfn5IzG0XTjhAVEJyNHnL2p7vc+wBDSdQuUpNw3M2u6xb9QsAY5Eg==",
+      "dev": true,
+      "requires": {
+        "chalk": "^2.0.1"
+      },
+      "dependencies": {
+        "chalk": {
+          "version": "2.4.1",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.1.tgz",
+          "integrity": "sha512-ObN6h1v2fTJSmUXoS3nMQ92LbDK9be4TV+6G+omQlGJFdcUX5heKi1LZ1YnRMIgwTLEj3E24bT6tYni50rlCfQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        }
+      }
+    },
+    "log-update": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/log-update/-/log-update-1.0.2.tgz",
+      "integrity": "sha1-GZKfZMQJPS0ucHWh2tivWcKWuNE=",
+      "dev": true,
+      "requires": {
+        "ansi-escapes": "^1.0.0",
+        "cli-cursor": "^1.0.2"
+      },
+      "dependencies": {
+        "ansi-escapes": {
+          "version": "1.4.0",
+          "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
+          "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
+          "dev": true
+        },
+        "cli-cursor": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
+          "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
+          "dev": true,
+          "requires": {
+            "restore-cursor": "^1.0.1"
+          }
+        },
+        "onetime": {
+          "version": "1.1.0",
+          "resolved": "http://registry.npmjs.org/onetime/-/onetime-1.1.0.tgz",
+          "integrity": "sha1-ofeDj4MUxRbwXs78vEzP4EtO14k=",
+          "dev": true
+        },
+        "restore-cursor": {
+          "version": "1.0.1",
+          "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-1.0.1.tgz",
+          "integrity": "sha1-NGYfRohjJ/7SmRR5FSJS35LapUE=",
+          "dev": true,
+          "requires": {
+            "exit-hook": "^1.0.0",
+            "onetime": "^1.0.0"
+          }
+        }
+      }
+    },
     "loglevel": {
       "version": "1.6.1",
       "resolved": "https://registry.npmjs.org/loglevel/-/loglevel-1.6.1.tgz",
@@ -6508,6 +7277,15 @@
         "sort-keys": "^1.0.0"
       }
     },
+    "npm-path": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/npm-path/-/npm-path-2.0.4.tgz",
+      "integrity": "sha512-IFsj0R9C7ZdR5cP+ET342q77uSRdtWOlWpih5eC+lu29tIDbNEgDbzgVJ5UFvYHWhxDZ5TFkJafFioO0pPQjCw==",
+      "dev": true,
+      "requires": {
+        "which": "^1.2.10"
+      }
+    },
     "npm-run-path": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -6516,6 +7294,17 @@
         "path-key": "^2.0.0"
       }
     },
+    "npm-which": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/npm-which/-/npm-which-3.0.1.tgz",
+      "integrity": "sha1-kiXybsOihcIJyuZ8OxGmtKtxQKo=",
+      "dev": true,
+      "requires": {
+        "commander": "^2.9.0",
+        "npm-path": "^2.0.2",
+        "which": "^1.2.10"
+      }
+    },
     "nth-check": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-1.0.1.tgz",
@@ -6929,6 +7718,15 @@
         "find-up": "^2.1.0"
       }
     },
+    "please-upgrade-node": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/please-upgrade-node/-/please-upgrade-node-3.1.1.tgz",
+      "integrity": "sha512-KY1uHnQ2NlQHqIJQpnh/i54rKkuxCEBx+voJIS/Mvb+L2iYd2NMotwduhKTMjfC1uKoX3VXOxLjIYG66dfJTVQ==",
+      "dev": true,
+      "requires": {
+        "semver-compare": "^1.0.0"
+      }
+    },
     "pluralize": {
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/pluralize/-/pluralize-7.0.0.tgz",
@@ -8115,6 +8913,12 @@
       "resolved": "https://registry.npmjs.org/preserve/-/preserve-0.2.0.tgz",
       "integrity": "sha1-gV7R9uvGWSb4ZbMQwHE7yzMVzks="
     },
+    "prettier": {
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.14.2.tgz",
+      "integrity": "sha512-McHPg0n1pIke+A/4VcaS2en+pTNjy4xF+Uuq86u/5dyDO59/TtFZtQ708QIRkEZ3qwKz3GVkVa6mpxK/CpB8Rg==",
+      "dev": true
+    },
     "pretty-bytes": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/pretty-bytes/-/pretty-bytes-4.0.2.tgz",
@@ -8868,6 +9672,15 @@
         "rx-lite": "*"
       }
     },
+    "rxjs": {
+      "version": "6.3.2",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.3.2.tgz",
+      "integrity": "sha512-hV7criqbR0pe7EeL3O66UYVg92IR0XsA97+9y+BWTePK9SKmEI5Qd3Zj6uPnGkNzXsBywBQWTvujPl+1Kn9Zjw==",
+      "dev": true,
+      "requires": {
+        "tslib": "^1.9.0"
+      }
+    },
     "safe-buffer": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
@@ -8962,6 +9775,12 @@
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.5.1.tgz",
       "integrity": "sha512-PqpAxfrEhlSUWge8dwIp4tZnQ25DIOthpiaHNIthsjEFQD6EvqUKUDM7L8O2rShkFccYo1VjJR0coWfNkCubRw=="
     },
+    "semver-compare": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/semver-compare/-/semver-compare-1.0.0.tgz",
+      "integrity": "sha1-De4hahyUGrN+nvsXiPavxf9VN/w=",
+      "dev": true
+    },
     "semver-diff": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/semver-diff/-/semver-diff-2.1.0.tgz",
@@ -9392,6 +10211,12 @@
         "tweetnacl": "~0.14.0"
       }
     },
+    "staged-git-files": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/staged-git-files/-/staged-git-files-1.1.1.tgz",
+      "integrity": "sha512-H89UNKr1rQJvI1c/PIR3kiAMBV23yvR7LItZiV74HWZwzt7f3YHuujJ9nJZlt58WlFox7XQsOahexwk7nTe69A==",
+      "dev": true
+    },
     "static-extend": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/static-extend/-/static-extend-0.1.2.tgz",
@@ -9442,6 +10267,12 @@
       "resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz",
       "integrity": "sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM="
     },
+    "string-argv": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/string-argv/-/string-argv-0.0.2.tgz",
+      "integrity": "sha1-2sMECGkMIfPDYwo/86BYd73L1zY=",
+      "dev": true
+    },
     "string-length": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/string-length/-/string-length-1.0.1.tgz",
@@ -9482,6 +10313,17 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "stringify-object": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/stringify-object/-/stringify-object-3.2.2.tgz",
+      "integrity": "sha512-O696NF21oLiDy8PhpWu8AEqoZHw++QW6mUv0UvKZe8gWSdSvMXkiLufK7OmnP27Dro4GU5kb9U7JIO0mBuCRQg==",
+      "dev": true,
+      "requires": {
+        "get-own-enumerable-property-symbols": "^2.0.1",
+        "is-obj": "^1.0.1",
+        "is-regexp": "^1.0.0"
+      }
+    },
     "strip-ansi": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
@@ -9583,6 +10425,12 @@
         "serviceworker-cache-polyfill": "^4.0.0"
       }
     },
+    "symbol-observable": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-1.2.0.tgz",
+      "integrity": "sha512-e900nM8RRtGhlV36KGEU9k65K3mPb1WV70OdjfxlG2EAuM1noi/E/BaW/uMhL7bPEssK8QV57vN3esixjUvcXQ==",
+      "dev": true
+    },
     "symbol-tree": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/symbol-tree/-/symbol-tree-3.2.2.tgz",
@@ -9794,6 +10642,12 @@
       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",
       "integrity": "sha1-yy4SAwZ+DI3h9hQJS5/kVwTqYAM="
     },
+    "tslib": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.9.3.tgz",
+      "integrity": "sha512-4krF8scpejhaOgqzBEcGM7yDIEfi0/8+8zDRZhNZZ2kjmHJ4hv3zCbQWxoJGz1iw5U0Jl0nma13xzHXcncMavQ==",
+      "dev": true
+    },
     "tty-browserify": {
       "version": "0.0.0",
       "resolved": "https://registry.npmjs.org/tty-browserify/-/tty-browserify-0.0.0.tgz",
diff --git a/package.json b/package.json
index 133fe34..e80b3f4 100644
--- a/package.json
+++ b/package.json
@@ -7,10 +7,22 @@
     "react-dom": "^16.5.0",
     "react-scripts": "1.1.5"
   },
+  "devDependencies": {
+    "husky": "^0.14.3",
+    "lint-staged": "^7.2.2",
+    "prettier": "^1.14.2"
+  },
   "scripts": {
+    "precommit": "lint-staged",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"
+  },
+  "lint-staged": {
+    "src/**/*.{js,jsx,json,css}": [
+      "prettier --single-quote --write",
+      "git add"
+    ]
   }
-}
\ No newline at end of file
+}