Added clear method to Feature.
Added the feature OnThirdOrFourthLine and the test
Finished OnThirdOrFourthLine by calling the method in the coordinates class
Created part of test for Conjunction.
Merge branch 'ThirdOrFourthLine' into orego8
Conjunction now passes a test.
Minor formatting.
Merge branch 'NearAnotherStone' into orego8
Improved BitBoard.
Added an expand method and tests to BitBoard