Add iterator class in LanguageMap and a few convenience methods
Merge pull request #26 from brianjmiller/dacdave_map_improvements

Add iterator class in LanguageMap and a few convenience methods
Add moreInfo handling to Activity Definition
[maven-release-plugin] prepare release tincan-0.4.0
[maven-release-plugin] prepare for next development iteration
Updated TinCanJava API functionality and LRS response handling.

-LRS, RemoteLRS, About, LRSResponses, and Documents brought updated to new architecture.
-ContextActivities and TCAPIVersion modified to handle receiving V101 responses
-HTTPRequest and HTTPResponse modified.  HTTPRequest no longer extends ContentExchange. It instead stores the relevant
	data for a request, and the ContentExchange is constructed in a private function in RemoteLRS.
fixed remote lrs method names. improved remote lrs tests.