fix(microbundle): update to latest version and remove umd support

Author: luisherranz

package.json

@@ -11,14 +11,13 @@
   },
   "homepage": "https://github.com/frontity/mobx-react-wrapper#readme",
   "main": "dist/mobx-react-wrapper.js",
-  "umd:main": "dist/mobx-react-wrapper.umd.js",
   "module": "dist/mobx-react-wrapper.m.js",
   "source": "src/index.js",
   "license": "Apache-2.0",
   "scripts": {
     "example": "parcel ./example/index.html --out-dir exampleDist",
-    "build": "microbundle -o dist/ --sourcemap false",
-    "dev": "microbundle watch -o dist/ --sourcemap false --compress false",
+    "build": "rimraf dist && microbundle -o dist/ --sourcemap false  -f es,cjs",
+    "dev": "rimraf dist && microbundle watch -o dist/ --compress false --sourcemap false -f es,cjs",
     "test": "jest --watch",
     "test:ci": "jest --coverage",
     "cz": "git-cz",
@@ -38,36 +37,37 @@
     "@babel/polyfill": "^7.2.5",
     "@babel/preset-env": "^7.2.3",
     "@babel/preset-react": "^7.0.0",
+    "@commitlint/cli": "^7.3.1",
+    "@commitlint/config-conventional": "^7.3.1",
+    "@semantic-release/changelog": "^3.0.2",
+    "@semantic-release/exec": "^3.3.2",
+    "@semantic-release/git": "^7.0.7",
+    "@semantic-release/github": "^5.2.9",
+    "@semantic-release/npm": "^5.1.3",
     "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^10.0.1",
     "babel-jest": "^23.6.0",
+    "commitizen": "^3.0.5",
     "coveralls": "^3.0.2",
+    "cz-conventional-changelog": "^2.1.0",
     "eslint": "^5.7.0",
     "eslint-config-airbnb": "^17.1.0",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jsx-a11y": "^6.1.2",
     "eslint-plugin-react": "^7.11.1",
+    "husky": "^1.3.1",
     "jest": "^23.6.0",
     "jest-dom": "^3.0.0",
-    "microbundle": "^0.6.0",
-    "mobx": "5.0.0",
-    "mobx-state-tree": "3.0.0",
+    "lint-staged": "^8.1.0",
+    "microbundle": "^0.9.0",
+    "mobx": "^5.0.0",
+    "mobx-state-tree": "^3.0.0",
     "parcel-bundler": "^1.10.3",
+    "prettier": "^1.15.3",
     "react": "16.8.0-alpha.0",
     "react-dom": "16.8.0-alpha.0",
     "react-testing-library": "^5.4.2",
-    "@commitlint/cli": "^7.3.1",
-    "@commitlint/config-conventional": "^7.3.1",
-    "@semantic-release/changelog": "^3.0.2",
-    "@semantic-release/exec": "^3.3.2",
-    "@semantic-release/git": "^7.0.7",
-    "@semantic-release/github": "^5.2.9",
-    "@semantic-release/npm": "^5.1.3",
-    "commitizen": "^3.0.5",
-    "cz-conventional-changelog": "^2.1.0",
-    "husky": "^1.3.1",
-    "lint-staged": "^8.1.0",
-    "prettier": "^1.15.3",
+    "rimraf": "^2.6.3",
     "semantic-release": "^15.13.3"
   },
   "peerDependencies": {