Beta31: Audio!

After more than a year in Early Access (how did that happen!?), audio is now in on the main branch. We hope you enjoy it! We're working on a few issues, and Disasterpeace is busy perfecting it, so there may be some changes over the next couple of weeks.

In other news, we've redesigned the city selection screen to show a city preview again, as well as a short description of what to expect from each city.