Babel preset env options overrides x (#230)

* support babel-preset-env overrides

also minor upgrades for babel and friends

* remove unused node-sass dep and udpate lockfile

Author: macgyver

lib/cmd/compile/scripts.js

@@ -60,7 +60,8 @@ const _ = require('lodash'),
       [
         require('@babel/preset-env'),
         {
-          targets: Object.assign(helpers.getConfigFileOrBrowsersList('babelTargets'), {})
+          targets: Object.assign(helpers.getConfigFileOrBrowsersList('babelTargets'), {}),
+          ...helpers.getConfigFileValue('babelPresetEnvOptions'),
         }
       ]
     ]