Merge pull request dcarbone#71 from dcarbone/bugfix/decimal_precision

Properly retain decimal precision in Decimal primtiive types

attempts to resolve dcarbone#68 by only overriding error handler func…

… during generation

Addressing dcarbone#67

fixing comment close issue on FHIRBase64Binary class method _writeToFile

cleaner validation output

minor cleanup in prep for gettin validation going

some dstu1 and 2 focused improvements for classes that extend primiti…

…ve types

fixing constructors for types that extend primitive types

v2.x (dcarbone#54)

* Working on v2

* working on refactoring primitives and implementing self-validation logic

* streamlining type creation, list classes now extend their primitive parents, stubbing out validation stuff

* skipping overloaded properties during unserialization and serialization

* fixing serialization of -list types

cleaning up xml serialize method a bit