A little more polish for the game, but the main thing is a fix for the server crashing when a bandit base repairs and bandit bases not levelling up.

VERSION: 1.0.20 - 21/10/17
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- [Feature] - Added a NOSPAWN option to LotPack items to make them not spawn in RNG maps or in zoned lots. See lots/packs/vanilla.txt.
- [Misc] - Tweaked the block crumble algorithm slightly so that particles spawn at a decreasing rate as the particle container fills up. (This is to prevent it filling up after the first few blocks being destroyed)
- [Misc] - Replaced the suppressed shotgun sound effect
- [Misc] - 20 second connection threshold failsaves raised to 30 seconds
- [Bugfix] - Fixed the AI not racketeering lots when it has reputation but no money
- [Bugfix] - Fixed server crash when repairing a bandit base
- [Bugfix] - Fixed bandit bases not being promoted after release