0.192.21 - Day of the Patch

This is a bugfix release, patching up all the bugs reported in recent days. Changelog:

• Processing H2O-only ore in MPU could cause division by zero and crash.
  
• Performance improvements for drone-mounted microseismic scanners.
  
• Railgun rebalanced so it can be fitted only on high-stress mount.
  
• Additional translations.
  
• You can no-longer abuse upgrade menu to get an upgrade for different price than listed.
  
• Reaction wheel could fire uncontrollably when ship was microwaved leading to wild spin.
  
• I fine-tuned AI collision avoidance parameters, so NPC ships fly more carefully.