Support ctrl+(left|right)

[bendem]

Most (all?) editors support jumping to next/previous word using ctrl+arrows. Micro inserts [1;5D or [1;5C instead.

$ echo $SHELL
/bin/bash
$ echo $TERM
xterm-256color
$ uname -a
Linux bendem-fedora-acer 4.4.6-301.fc23.x86_64 #1 SMP Wed Mar 30 16:43:58 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

[zyedidia]

See #79