Update Maven central repository with recent code changes

Code changes since the most recent Maven release (20141113):

Existing feature enhancements	Pull request
New methods for Enum type	#140
BigDecimal and BigInteger methods	#135
Iterable JSONArray	#132
Remove compiler cast warnings	#122
JavaDoc fix in CDL	#120
Fix for JSONML.toString()	#118
Fix for JSONArray.toString()	(direct commit) d6ba318