0.04:

- Support for colorised life - Immigration
- Support for colorised life - Quadlife
- Garbage collection (deleting unused hash entries) is now performed on each 
  tick. shrinkBoard is now deprecated from this aspect and must only be used 
  to shrink the board's boundaries.

0.03:

- Small code style fixes.
- Test fix.
- Changes in oscilator check.
- Added license in Makefile.PL

0.02:

- Better tests.