uix:TextInput introduction of `use_bubble` property closes #1100
uix:TextInput select word on double tap
core: add `trippletap` postproc module
uix:TextInput add `on_tripple_tap` event along default functionality of
selecting entire line on this event.
uix:TextInput add `on_quad_touch` event and default functionality of
selecting all text
fix recent pr syntax
core:config add `desktop` token under `kivy` section (ver: 8)
- move `tripletap` and config tokens under new config version.
- TextInput use `desktop` token from config to initialize `use_bool`
merge master
doc fixes on textinput, tripletap (and doubletap as well). works perfectly!