Merge bogo-python v1.1 from upstream

Squashed 'bogo/' changes from 24c77d5..fa4581f

fa4581f Add notes for maintainer
8a6ca05 Bump version to 1.1
5305d89 Add tests for handle_backspace
b27827f Better handle_backspace
06977b5 Implement handle_backspace()

git-subtree-dir: bogo
git-subtree-split: fa4581febcd963032a7057d3b9377854f170fa59
New backspace behavior based on bogo.core.handle_backspace()

It's more predictable like backspace on Unikey
Merge pull request #29 from lewtds/better-backspace

Better backspace