0.21.2 developer preview published

This is a bug-fix and some minor features release. I suppose it should be called 0.22.0, but the features are really minor. Changes:

• Corrected the ring map. This is the core of the release, previous versions map was broken to the point that no events whatsoever occurred.
• Increased the frequency in minerals at the edge of the ring. They are still low frequency and highly contaminated, but should signify how the mineral mining mechanics work from the very start.
• Added a text explaining emergency autopilot activation when velocity exceeds safe limits.
• Tuning of the UI bloom effect.
• Fixed clicks in the audio.
• Adrenaline booster will now signify that it is depleted.