v0.5.1a - buffs edition

A buffs-only (well, not strictly speaking though) release. I was playing with the current version and noticed some things not filling their niches.

New things:

• 2 new rare affixes. Combined, they can make auto-shotgun very OP haha.

Fixes and balance changes:

• Fixed errors spam in console in some cases (errors were not affecting the gameplay, so if everything was OK, you didn't even notice them)
• Altered Revolver (damage 10-20 -> 16-30, faster fire animation response, but added recoil I forgot about) and Auto-Shotgun (slightly better damage 3-8 -> 4-8, more pellets 5 -> 6, less accuracy 10.5 -> 12.5).
• Revolver reload animation is tweaked to be less jaggy.
• All Revolvers and Railguns now have additive +25% to their crit damage (this stat is hidden though, not sure where to show it)
• All self-upgradable weapon affixes are considerably buffed: the rarity of the monster required for upgrading your affix is lowered.
• All self-upgradable weapon affixes now notify you when their effect is triggered.
• All self-upgradable weapon affixes have increased chance to appear (50% -> 75% among weapon suffixes).

Internal changes:

• Added additional crit dmg hidden stat for weapons.