Major refactor

[justinmchase]

I've tried to use this library a few times but it seems to be failing due to a few simple nodejs related issues. I hope this isn't taken the wrong way but I fixed it up!

What this fixes:

• Browser compatible
• Fixes the import token bug, which made it unusable as a dependency
• Adds build / watch / lint
• Fixes the lodash issue
• Added gulp 4, some basic tasks
• Updated babel and moved to env preset
• Libraries cannot use babel-register except during tests
• Cleaned up what gets included in the package
• Added standard linter
• Updated some syntax to es6, e.g. import, const, map, reduce, etc.
• Fixed an unreported bug in the giant unicode regexp
• Removed inconsistent, incorrectly patterned callback style from synchronous functions

I would recommend a Major version bump for this!

[justinmchase]

Fixes #40 #39 #37 #36 #31 #24 #12

[fungilation]

"Major" is right ^.^

Looks good, at a glance.

[CraigHarley]

Code looks good to me, I haven't tested it though.

[justinmchase]

Closing since no traction for a while.

[xpipko]

Code looks good, made similar changes before seeing this merge request, specifically the babel-env updates to work with browserify