var
full-screen test
Redraw selection overlay on toggleLineNumbers
Fix some minibuffer issues:

- redraw caret properly after cursor move
- fix selection with S-arrows
- fix undo
- make C-a and HOME go after the prompt
Display the minibuffer prompt in bold

(class name: "minibuffer-prompt")
Add yes/no completions for minibuffer_read_yn
Merge branch 'master' of https://github.com/mishoo/ymacs