Version 1.2.0 beta released

This version introduces challenges, which are custom scenarios for Planetbase. See here for instructions on how to download this version and for more details.

The detailed changelog:

• Challenges can now be created and uploaded to the Steam Workshop. Guide here.
• 4 new builtin challenges
• 4 new achievements
• New music track

We will keep this in beta for the next few weeks while we do some more thorough testing for the challenge system and gather user feedback.