* Adjust constructors to simplify
* Refactor to remove duration parameter for CDA (always end of game)
* Fix warnings
* Druid Class not CDA
* Entropic Specter fixup
* Further constructor simplification
* Analogous simplification for setting power only
* Analogous simplification for setting toughness only
* Remove superfluous parameter
* Set fields final
"b" + "r" now changed to 'b' + 'w'. It's more straight-forward, and may cause perfomance improvements - character primitives allocation is faster and less expensive than string creation.