dont remove editor while password blockers active

Optionally disable text selection

fixes a bug where the password field could replace it's contents with
blocker glyphs if the widget was unfocused at the wrong time

Change hover cursor to be configurable per widget

Start documenting

fix autofocus breaking due to system ordering

also renames some structs

Refactor to (hopefully) make writing docs easier

dogfooding showed that they're quite handy to have around

Password plugin

* use editor buffer for infinite line

need to get my numbers right but the implementation is doing at least
something again

* working infiniteline (when mode != center)

* add minimum padding, fixing centered infiniteline

* user editable min padding on center infiniteline