Upgrade: Updates babel suite to version 7.x

Updates the whole babel ecosystem to version 7.

Author: markusguenther

.babelrc

@@ -1,6 +1,7 @@
 {
-  "presets": ["react", ["es2015", { "loose": true }], "stage-0"],
+  "presets": ["@babel/preset-react", "@babel/preset-env"],
   "plugins": [
-    "transform-decorators-legacy"
+    ["@babel/plugin-proposal-decorators", { "legacy": true }],
+    "@babel/plugin-proposal-class-properties"
   ]
 }

package.json

@@ -29,17 +29,17 @@
     "prop-types": "^15.6.2"
   },
   "devDependencies": {
+    "@babel/cli": "^7.6.4",
+    "@babel/core": "^7.6.4",
+    "@babel/plugin-proposal-class-properties": "^7.5.5",
+    "@babel/plugin-proposal-decorators": "^7.6.0",
+    "@babel/preset-env": "^7.6.3",
+    "@babel/preset-react": "^7.6.3",
     "@semantic-release/changelog": "^3.0.2",
     "@semantic-release/git": "^7.0.7",
     "@semantic-release/release-notes-generator": "^7.1.4",
     "@types/react": "^16.8.18",
-    "babel-cli": "^6.26.0",
-    "babel-core": "^6.26.3",
-    "babel-eslint": "^10.0.1",
-    "babel-plugin-transform-decorators-legacy": "^1.3.5",
-    "babel-preset-es2015": "^6.24.1",
-    "babel-preset-react": "^6.24.1",
-    "babel-preset-stage-0": "^6.24.1",
+    "babel-eslint": "^10.0.3",
     "commitizen": "^3.1.1",
     "conventional-changelog-eslint": "^3.0.1",
     "cz-adapter-eslint": "^0.2.0",
@@ -48,7 +48,7 @@
     "eslint-plugin-prettier": "^3.1.0",
     "eslint-plugin-react": "^7.13.0",
     "fbjs": "^1.0.0",
-    "jest": "^23.6.0",
+    "jest": "^24.9.0",
     "jsdom": "^15.0.0",
     "prettier": "^1.17.1",
     "react": "^16.8.6",