[Game] added getGlobalPosture
[Turn] improved turnEnd()
[Player] added canPlayAsEvent(Card c) functionality
[CountryUSA] made canWarOfIdeas always return false.
[Country] added support for war of ideas - not yet implemented for MuslimCountry
[Game] added getPosturePenalty method, for calculating global posture penalty (0-3)
[Game] added getPrestigeModifier, for calculating the prestige modifier to WoI rolls
[MuslimCountry] added WarOfIdeas()
[Country] added canDeployFrom functionality