Add 38C3

[schildbach]

I left out c3nav for now.

[github-actions]

New: 38C3
File passed validation! \o/

[schildbach]

I also removed refresh_interval because:

ERROR: Schedule 38C3 refresh_interval set below 1d while server never sends HTTP 304s

[schildbach]

@Wilm0r ready for review.

[Wilm0r]

Hrmm.... Hadn't noticed the refresh interval thing before. I should fix that check, Giggity should be better at HTTP caching now (including ETags, which are more likely to work IIRC).

CCC does probably make last minute schedule changes somewhat regularly?

[schildbach]

I got word that their server does indeed not handle the If-None-Match correctly atm. They want to look into it, but low prio atm.

Yes, schedule changes are frequent and often quite last-minute. Even entire locations (rooms) pop up last minute (-:

[mmuman]

Oh cool, won't have to do it.
Yes there are usually many updates to the schedule…

[mmuman]

It's sad the full schedule doesn't pull from an xml…