Supermatter Tweak
- O2 Primary mode now actually works.
- O2 has to be at least 15% (instead of previous 400%, WTF?) of core composition to actually have any effect on the core, considering all remaining gas is N2 (so realistically it's somewhere around 13-14%)
Adds two mwerezak's requests.
Updates synth airlock interface messages
Fixes #6488
Fixes #6503
Fixes #6401
Fixes #6466
Fixes #6495
Fixes #6484
Fixes #6474
Makes species mutation a bit easier.
Fixes #6325
Fix for potential infinite splint farming exploit in previous commit.
Fixes #5451  by stealing JimTheCactus' and VampyrBytes' work - thanks dudes.
Minor name fix from VampyreBytes/Paradise.
Merge pull request #6512 from Zuhayr/master

Fixes/ninja buffs.
Fixes #6351 and #6350.
Fixes #6297
Merge pull request #6515 from Zuhayr/master

Fixes
Merge pull request #6509 from mwerezak/door-message

Updates synth airlock interface messages