1. disable filetype plugin;
2. add import into beta.py augroup;
3. add ++nested for BufEnter,
but at the end, just disable filetype
plugin;
since can't figure out the way
to override its effect;
1. switch to file logging
with rotation;
2. test that at 100ms callback
execution UI looks fast;
3. test that <C-p> hotkey
makes the switcher popu;
3.1. TODO,
select some better
switching UI component;
should support a list of more buffers
than fit into the screen;
should support some real time
filtering via regex;
