Release version 0.31-SNAPSHOT
[enhancement] added "enum" for valid extension field types
Merge pull request #19 from tkrille/OSNG-206

OSNG-206
[enhancement] Modified deserializer for type safe extensions
Merge pull request #21 from wallner/deserializer

[enhancement] Modified deserializer for type safe extensions
refactoring
[clenaup] improving javadoc
make sonar happy
Merge pull request #23 from davidmoebius/OSNG-217

make sonar happy
fixing sonar violations
Merge pull request #24 from tkrille/fixing_sonar

fixing sonar violations
fixing sonar violations again
Merge pull request #25 from tkrille/fixing_sonar

fixing sonar violations again
[test] added JSONAssert library for json testing
[test] improved json fixtures helper
[test] fixed tests to reflect new json fixtures helper
[test] fixed tests to reflect new json fixtures helper
[test] updated tests for extension field types
[enhancement] changed getAllFields to return value and type of fields
Merge pull request #26 from tkrille/OSNG-209

Osng 209
[test] fixed failing test