Date checking tested
Fixed typo
Added tests for CellGrowth
Fixed date checking test
Merge branch 'feature/tests' of github.com:Derkje-J/programming-life into feature/tests
Added spec tests for CellGrowth and Substrate
Node fixed and fully tested
Added spectests to substrate
Merge branch 'feature/tests' of https://github.com/Derkje-J/programming-life into feature/tests
Improved Cell spec
Merge branch 'feature/tests' into develop
Added raphael uncompressed

For debugging purposes.
Refactored cell function names
Removed substrate function in module
Added numeric helpers
Updated specs for placment
Reordered for readability
Removed console.log
Removed hacked pane
Updated doc for SIG