Highlight selected line wholly
Delete forward char by C-d
Add EOF handler
Change config default matcher to IgnoreCase
Enable color configuration
Fix default style
Workaround termbox

termbox's PollEvent() blocks, and on particular instances it blocks
even after termbox.Close() is called. In order to workaround this,
we isolate termbox.PollEvent() in a goroutine so we can just wait
for something to come in via a channel.

In this scenario, once our main functions exit, termbox's polling
is cleaned up by go itself, and we don't get stuck in that loop.