Pull the new api from bogo-python

Merge commit '2686d37c64267116065c099e4bfe046a9f8d9d56'
Squashed 'bogo-python/' changes from d2201ad..f408037

f408037 [API-BREAKAGE] handle_backspace() now only returns a new raw_sequence

git-subtree-dir: bogo-python
git-subtree-split: f408037b2ee836101c5e6a0c2fea79ff52cbcc9d
Call process_sequence after handle_backspace()
Squashed 'bogo-python/' changes from f408037..9b85329

9b85329 Fix a bug in which handle_backspace misses "y"

git-subtree-dir: bogo-python
git-subtree-split: 9b85329a408ded4cead3539cecba12984d5d7650
Merge the fix for 'y' with handle_backspace in bogo-python

Merge commit '115b3f515d7bf03a1791863a0c52f034635f0d4d'
White space