ForkStrategy implemented
loosingLine() on BoardLines is now re-using winningLine()
isLoosingLine() method on Line removed
Method renamed
Removed unnecessary trim() on Marks.count()
Minor refactorings to improve consistency
printlLines(lines) added to Console
Minor refactoring
placeMark() on Marks receive a PlayerMark instead of String
markAt(cell) on Marks returns PlayerMark
BaordLinesParameterizedShould renamed to HasWinnerLineShould
Cosmetic fixes on tests, making them consistent
Strategies renamed