set default authorship background to transparent

Fixes #199
remove dead code
update testing options
update dev dependencies
keep old range on focus loss
add selection save/restore test
Make inline tags inline-block

Fixes #61
sauce supports android 4.4 now
Android chrome behaves correctly

revert ccb7175d900b6cc9f2f6629c248c9ff8a65f9420
Restore selection for IE
Merge branch 'develop' of github.com:quilljs/quill into develop
consoliate focus logic