20171018

Pull Request	Description
#362	Fixes XML Unescaping
#360	Creating a JSONObject from a string that contains a duplicate key (any level) throws a JSONException that includes location
#357	Update javadoc according to issue #356
#354	Updates for populateMap based on discussion in #279 and #264
#352	Error message position fixes
#348	Capacity improvements for internal structures
#347	A comment added to explain the use of HashMap
#345	Adds JSONException for write value errors
#341	Optimize loops
#337	Optimizes opt* functions
#336	Numeric enhancements, Refactoring, Fix spelling