chore: upgrade babel

Fixes #923

Author: aleclarson

package.json

@@ -54,14 +54,14 @@
     "@babel/runtime": "^7.3.1"
   },
   "devDependencies": {
-    "@babel/core": "7.2.2",
-    "@babel/plugin-proposal-class-properties": "7.4.4",
-    "@babel/plugin-proposal-object-rest-spread": "7.3.2",
-    "@babel/plugin-transform-modules-commonjs": "7.4.4",
-    "@babel/plugin-transform-runtime": "7.4.4",
-    "@babel/preset-env": "7.3.1",
-    "@babel/preset-react": "7.0.0",
-    "@babel/preset-typescript": "7.0.0",
+    "@babel/core": "~7.9.0",
+    "@babel/plugin-proposal-class-properties": "~7.8.3",
+    "@babel/plugin-proposal-object-rest-spread": "~7.9.5",
+    "@babel/plugin-transform-modules-commonjs": "~7.9.0",
+    "@babel/plugin-transform-runtime": "~7.9.0",
+    "@babel/preset-env": "~7.9.5",
+    "@babel/preset-react": "~7.9.4",
+    "@babel/preset-typescript": "~7.9.0",
     "@rollup/plugin-node-resolve": "^7.1.3",
     "@types/jest": "^24.0.13",
     "@types/react": "^16.8.19",