`twitchy -w` stopped accepting upper-case characters

[apetresc]

I suspect the underlying cause here is a Twitch API change because I'm quite certain it used to work fine on the same git rev, but basically twitchy -w no longer accepts upper-case characters, even when the channel name is supposed to have them.

Case in point:

$ twitchy -w Chess
 No valid channels.
$ twitchy -w chess
 Checking 1 channel(s)...
 Chess
 1 Chess                  1,004       2018 PRO Chess League, Week 2
 Number? ^C

The channel in question is supposed to be Chess, not chess, and that's what twitchy's own output is returning.

[BasioMeusPuga]

This is fixed now. In that I added a line somewhere and shook my fist at the sky.