Fixes to Mana.enough:
mana of any color (ManaType.Any) was being used to pay for colourless mana.
Fixes for Mana.needed:
mana of any color (ManaType.Any) was being used to pay for colourless mana.
calculation for generic mana remaining was using min(0, available) instead of max(0, available) meaning that leftover mana of other types was never used to pay for any leftover generic costs.
Other:
Added tests for both .needed and .enough.
Moved tests some tests from ManaUtilTest to ManaTest
Simplified Mana.subtractCosts by calling Mana.substract first to make use of common functionality.
Added more documentation
Added tests for both .needed
Added more tests for .enough to cover the changes with colourless mana.
* refactored mana methods to WUBRG order
* more WUBRG refactoring
* added new mana tracking object
* fixed code error
* fixed missing mana count
* fixed null pointer exception in tests
* fixed issue with equality
* more equality fixes
* some cosmetic changes to ManaTest
* added copy method to setToMana
* fixed some initialization issues
* fixed serialization issue
* [KHM] Implemented Search for Glory
* updated mana handling to track snow
* added tests for snow mana tracking
* updated implementation of setter methods
* updated paramater to use copy methods
* fixed snow mana test to ensure proper mana tapping
* replaced instances of getPayment with getUsedManaToPay
* updated tracking of snow mana
* reverted snow mana tracking removal
* finished reverting change
