Overhaul bash completion to mirror invoke logic#930

Merged

davidism merged 3 commits intopallets:masterfrom stopthatcow:feature/925

Sep 12, 2018

+138-47

Commits on Jul 3, 2018

Fix bash completion when defaults are present and the way subcommands are handled.
Nicholas Wiles
committed

Commits on Sep 11, 2018

Merge with upstream changes and use resilient_parsing flag to ignore default values.
Nicholas Wiles
committed

Commits on Sep 12, 2018

organize changelog
davidism
committed