fixed microbe healing wraparound bug (using mod)
fixed typo (=- should be ==)
fixed typo (interfers -> interferes)
refactored organelle creation code, organelles now initialized by OrganelleFactory
more OrganelleFactory refactoring
some cleanup related to OrganelleFactory
Added some basic RollingGrid boilerplate
Nearly finalized interface, settled several implementation questions.
Compiles, but is very ugly.
Merge pull request #166 from Moopli/165-rolling-grid

165 rolling grid