v0.3.4a - Hotfixes

v0.3.4a:

* Fixed sterilization not blocking bacteria spawning

* Rebalanced contamination rates to be less demanding

* Fixed bug where abandoning contracts could result in net positive Biomarks

* Mutagen now unlocks upon tutorial completion

* Fixed bug where specimens wouldnt be added to Cryobank from Biomarket orders

* Updated contracts to reflect recent changes