feat(date-fns): we update date-fns to version v2.0.0

affects: @datepicker-react/hooks, @datepicker-react/styled

Because we updated date-fns to v2.0.0, we need to make some breaking changes:
Date format: we use
date-fns v2.0.0 date format
Hooks: parseDate function: The function takes an additional parameter,
namely a date.

BREAKING CHANGE:
date format, parseDate

ISSUES CLOSED: #4

.eslintrc.json

@@ -11,7 +11,8 @@
         "extensions": [".js", ".tsx", ".ts"]
       }
     ],
-    "import/no-unresolved": ["error", {"ignore": ["^react$", "csstype"]}]
+    "import/no-unresolved": ["error", {"ignore": ["^react$", "csstype"]}],
+    "@typescript-eslint/no-angle-bracket-type-assertion": 0
   },
   "settings": {
     "import/resolver": {

docs/migrating.md

@@ -0,0 +1,43 @@
+# Migrating to 2.0.0
+
+In version v2.0.0 we updated date-fns to 2.0.0. Therefore we need to make some breaking changes.
+
+- **Date formatting** [All formats](https://date-fns.org/v2.0.0/docs/format),
+  [Popular mistakes](https://date-fns.org/v2.0.0/docs/Unicode-Tokens)
+
+  ```js
+    // Before v2.0.0.
+    const dayLabelFormatFn = (date) => format(date, 'DD')
+    const weekdayLabelFormatFn = (date) => format(date, 'dd')
+    const monthLabelFormatFn = (date) => format(date, 'MMMM YYYY')
+
+    useMonth({
+      ...,
+      dayLabelFormat = dayLabelFormatFn,
+      weekdayLabelFormat = weekdayLabelFormatFn,
+      monthLabelFormat = monthLabelFormatFn,
+    })
+
+    // v2.0.0.
+    const dayLabelFormatFn = (date) => format(date, 'dd')
+    const weekdayLabelFormatFn = (date) => format(date, 'eeeeee')
+    const monthLabelFormatFn = (date) => format(date, 'MMMM yyyy')
+
+    useMonth({
+      ...,
+      dayLabelFormat = dayLabelFormatFn,
+      weekdayLabelFormat = weekdayLabelFormatFn,
+      monthLabelFormat = monthLabelFormatFn,
+    })
+  ```
+
+- **Hooks: parseDate function:** The function takes an additional parameter, namely a date.
+  [Docs](https://date-fns.org/v2.0.0/docs/parse)
+
+  ```js
+  // Before v2.0.0
+  parseDate('02/11/2014', 'MM/dd/yyyy')
+
+  // v2.0.0
+  parseDate('02/11/2014', 'MM/dd/yyyy', new Date())
+  ```

package.json

@@ -37,6 +37,7 @@
     "lerna:version-prerelease": "lerna version prerelease --github-release --conventional-commits",
     "lerna:version-patch": "lerna version patch --github-release --conventional-commits",
     "lerna:version-minor": "lerna version minor --github-release --conventional-commits",
+    "lerna:version-major": "lerna version major --github-release --conventional-commits",
     "coveralls": "yarn run test:coverage && cat ./coverage/lcov.info | coveralls"
   },
   "author": "Miha Sedej",
@@ -63,15 +64,15 @@
     "@types/storybook__addon-actions": "^3.4.3",
     "@types/storybook__addon-knobs": "^5.0.3",
     "@types/storybook__react": "^4.0.2",
-    "@typescript-eslint/eslint-plugin": "^2.0.0",
-    "@typescript-eslint/parser": "^2.0.0",
+    "@typescript-eslint/eslint-plugin": "^2.0.1-alpha.19",
+    "@typescript-eslint/parser": "^2.0.1-alpha.19",
     "awesome-typescript-loader": "^5.2.1",
     "babel-eslint": "^10.0.2",
     "babel-loader": "^8.0.6",
     "commitizen": "^4.0.3",
     "coveralls": "^3.0.6",
     "cz-lerna-changelog": "^2.0.2",
-    "date-fns": "^1.30.1",
+    "date-fns": "^2.0.0",
     "eslint": "^6.2.1",
     "eslint-config-prettier": "^6.1.0",
     "eslint-config-react-app": "^5.0.1",
@@ -107,7 +108,7 @@
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-replace": "^2.2.0",
     "rollup-plugin-terser": "^5.1.1",
-    "rollup-plugin-typescript2": "^0.22.1",
+    "rollup-plugin-typescript2": "^0.23.0",
     "rollup-plugin-visualizer": "^2.5.4",
     "stylelint": "^10.1.0",
     "stylelint-config-standard": "^18.3.0",