Vim Timings

Assorted codes for checking completion speed.

:so timings.vim
<leader>T to start recording delays between InsertCharPre and CompleteChanged
type some code
<leader>T to stop recording delays
:TimingsSave examples/cmp-timings.json nvim-cmp to export timings with a given title
$julia -i -- timings.jl examples/coc-timings.json examples/cmp-timings.json to plot timing series
call timings(ARGS) from Julia REPL to refresh plots for updated data

Provide feedback