VirusMod changes in how the "virus" interacts with blocks.
Degrades based on the block's resistance that it's destroying (also a fixed rate to ensure non-infinite viruses).
Randomization in pattern to ensure that the viruses movements seem rather arbitray at best.
Tick rate cut in half - will now update/spread fast.
The configuration file was previously updated so that it can enable/disable the degradation based on the blocks resistance and also what blocks it cannot touch (Default is air and obsidian).