fix: Upgrading react-beautiful-dnd to v7

#82

package.json

@@ -34,7 +34,7 @@
     "immutability-helper": "^2.4.0",
     "lodash": "^4.17.4",
     "prop-types": "^15.6.0",
-    "react-beautiful-dnd": "^6.0.1",
+    "react-beautiful-dnd": "^7.1.0",
     "react-redux": "^5.0.3",
     "redux": "^3.6.0",
     "redux-actions": "^1.2.2",

yarn.lock

@@ -7104,12 +7104,11 @@ react-addons-test-utils@^15.5.1:
   version "15.6.0"
   resolved "https://registry.yarnpkg.com/react-addons-test-utils/-/react-addons-test-utils-15.6.0.tgz#062d36117fe8d18f3ba5e06eb33383b0b85ea5b9"
 
-react-beautiful-dnd@^6.0.1:
-  version "6.0.1"
-  resolved "https://registry.yarnpkg.com/react-beautiful-dnd/-/react-beautiful-dnd-6.0.1.tgz#f5b70cc37188bd9e79c2bd2152bebfadb2861cff"
+react-beautiful-dnd@^7.1.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/react-beautiful-dnd/-/react-beautiful-dnd-7.1.0.tgz#f78b4b47c557fba7ca3c4ae399c3b9621c92dc50"
   dependencies:
     babel-runtime "^6.26.0"
-    invariant "^2.2.2"
     memoize-one "^3.1.1"
     prop-types "^15.6.0"
     raf-schd "^2.1.1"
@@ -7118,6 +7117,7 @@ react-beautiful-dnd@^6.0.1:
     redux "^3.7.2"
     redux-thunk "^2.2.0"
     reselect "^3.0.1"
+    tiny-invariant "^0.0.3"
 
 react-docgen@^2.15.0:
   version "2.17.0"
@@ -8493,6 +8493,10 @@ timers-browserify@^2.0.2:
   dependencies:
     setimmediate "^1.0.4"
 
+tiny-invariant@^0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tiny-invariant/-/tiny-invariant-0.0.3.tgz#4c7283c950e290889e9e94f64d3586ec9156cf44"
+
 tmp@^0.0.29:
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.29.tgz#f25125ff0dd9da3ccb0c2dd371ee1288bb9128c0"