Keep the deftxt string as-is
Combine the match_window options and allow more flexibility.

Closes #306
Add to the overview the buffertag mode options
Inclusion filtering for cache files deletion
Allow x_func function arguments to be passed in a Dictionary
Allow :CtrlPLine to take a bufname argument

Closes #396
Put s:byfname behind s:ispath

Closes #421
Add ToggleMRURelative

Closes #398
Update ctrlp.txt
Match ampersands literally
Reset ttimeout (waits for key codes forever)
Check and append ending slashes

Fixes #434
Fixes #437
Leave 'mouse' as-is

Fixes #438