Completions at console

[sglyon]

It would be great to have completions at the console.

@one-more-minute, any idea why they don't work out of the box? We have the console grammar specified as source.julia and everything is properly scoped and highlighted. I feel like that should be enough to make it work.

[MikeInnes]

Root issue is atom/autocomplete-plus#383. I imagine it wouldn't be too hard to modify where the autocomplete triggers, but haven't dug into the code much either.

[pfitzseb]

Done.