Fix for NPE when cube message does not have number of stations for magnitude
Removed clone of BigInteger
Removed redundancy from before cube fields were BigIntegers
Safer null handling in QuakemlToCube conversion, and allow messages without magnitudes to convert
Updated CubeToQuakeml to better support messages without magnitude
Fix for logic error, when magnitude is not null but magnitude error is
Added validation support to EQMessageParser
Updated CubeToEQMessage to be compliant with schema definition
Added validation support to Quakeml_1_2_Parser
Stop catching exceptions in EQMessageParser, so validation exceptions can bubble
Make CubeToQuakemlConverterTest use validation during tests
Updated converter with methods that support validation, validation command line argument
Fix for quakeml schema resource path
Catch validation exceptions and print line, column numbers
Updated quakeml schema to point to reference schema, instead of jaxb modified schema
Fixes to javadoc descriptions of methods validation capabilities
Merge pull request #4 from jmfee-usgs/npe_num_mag_stations

Fix for NPE when cube message does not have number of stations for magni...
Merge pull request #5 from jmfee-usgs/validation

Validation
Trap and log exceptions when quakeml magnitude type is unexpected
Merge pull request #6 from jmfee-usgs/npe_unknown_quakeml_mag_type

Trap and log exceptions when quakeml magnitude type is unexpected