Servers bind a nick to a connection for a short window after it
disappears to try and avoid contention over nicks. This may cause a 437
during connection to a server (c.f. ProgVal/Limnoria#1033) or even
during normal nick changes, if the timing is lucky.
Add handling for this error to the startup code and the Admin plugin.
Signed-off-by: James McCoy <vega.james@gmail.com>
Tons of changes. Here's the summary of things that matter most:
* There is no more supybot.fix.
* There is no more supybot.webutils; now there is supybot.utils.web.
* It's no longer webutils.WebError, but just utils.web.Error.
* You shouldn't import itertools, ideally, but instead import utils.iter.
* No more using imap/ifilter in commands unless absolutely necessary. It's
premature optimization and annoying.
* utils.str.format isn't quite ready yet, but will be soon. That'll be the
next big thing to fix in our code.
