v0.2.5:

* Reworked contract system to offer more depth and variety (Still very WIP, needs feedback and testing)

* Adjusted weighting and masking for automatic strain grouping

* Increased digestive enzyme damage

* Fixed contract timer bug where time-based objectives would be impossible due to their timer being too short

* Fixed major performance bug where hidden panels were being redrawn every frame

* Fixed cells losing size, strain identity, and division progress on save/load

* Fixed various Theoretical Lab bugs caused by stricter Lab Mode rules

* Fixed bug where explosive enzymes would set dense substrate to 30% regardless of initial value

* Implemented suspected fix for desynchronization between interaction areas and visual position of cells and organelles at high cell counts (monitoring result)

* Gated "kill all cells" hotkey behind warning

* Visual tweaks