Minimum Browsers Supported (#4873)

* Minimum supported browsers and version standard: add browsers and targets to .babelrc and package.json

* Regenerate package.json, fix issue with comma in merge

* Resolve merge conflicts

* Regenerate package-lock.json

* Revert to previous package-lock.json

.babelrc

@@ -1,4 +1,4 @@
 {
-  "presets": [["env"], "react", "stage-0"],
+  "presets": [["env", { "targets": { "browsers": [">0.25%", "not ie 11", "not op_mini all"] } } ], "react", "stage-0"],
   "plugins": ["transform-runtime", "transform-async-to-generator", "transform-class-properties"]
 }

package.json

@@ -57,7 +57,11 @@
             [
               "env",
               {
-                "debug": true
+                "browsers": [
+                  ">0.25%",
+                  "not ie 11",
+                  "not op_mini all"
+                ]
               }
             ],
             "stage-0"