Include pylintrc in manifest (palantir#531)

Fixes palantir#520

Respect client capabilities snippet support (palantir#529)

Fixes palantir#515 
Fixes palantir#526 

Also only generates snippets for positional args

Filter builtin modules (palantir#519)

Turn on 'follow_imports' & 'follow_builtin_imports' options by default (

palantir#482) (palantir#483)

Fix circle publishing (palantir#501)

Enable publishing (palantir#500)

Generate insert snippets for callables (palantir#499)

Fixes palantir#496

Fix multi-line signatures (palantir#480)

* Fix multi-line signature

* Remove whitespace

Include tests in source dist (palantir#478)

yapf_format: fix config lookup (palantir#473)