Introduce Go Modules

[marwan-at-work]

No description provided.

[slimsag]

Looks like this is causing some failure on CI

[marwan-at-work]

@slimsag not sure what megacheck does but this is what's being returned:

1.68s$ megacheck -tags=js ./...
/home/travis/.gimme/versions/go1.11.linux.amd64/src/runtime/internal/sys/zgoos_linux.go:8:7: GOOS redeclared in this block
couldn't load packages due to errors: runtime, runtime/internal/sys

Sounds like a possible error in ignoring build tags. Does it make any sense to you?

[slimsag]

megacheck is a very nice linter 😃

My guess is that megacheck is not playing well with go modules right now. It looks like there is an open issue and a separate next branch there for adding go modules support dominikh/go-tools#328

Probably we can try just checking out that next branch and seeing if that fixes the problem, otherwise we will have to temporarily disable megacheck which would be sad :/

[AnikHasibul]

Take a look at #220

[slimsag]

Moved the blackfriday upgrade to #228 since PRs should be scoped to one singular change.

[slimsag]

Fixed conflicts + remaining issues and opened new PR #229

(I retained your authorship information so you still get credit, of course 😄)