Release version 0.40-SNAPSHOT
[enhancement] bumped dependency and maven plugin versions
Merge pull request #80 from dacrome/bump_dependency_versions

[enhancement] bumped dependency and maven plugin versions
[task] added dataUri class and using it in Photo
Merge pull request #81 from davidmoebius/OSNG-394-dataUriClass

[task] added dataUri class and using it in Photo
[task] added null checks
[task] refactoring code through suggestions from SONAR
Merge pull request #82 from davidmoebius/null_test

[task] added null checks
Merge pull request #83 from davidmoebius/sonar

[task] refactoring code through suggestions from SONAR
updated version since it was not done automatic
added release note for 0.40
[refactor] removed toString() from type to avoid nullPointerExceptions
Update README.md
Merge pull request #84 from davidmoebius/type_toString

[refactor] removed toString() from type to avoid nullPointerExceptions
[task] added additional javadoc for the client
Merge pull request #85 from davidmoebius/client_javadoc

[task] added additional javadoc for the client
[task] added and refactored Builder header to User and Group
Merge pull request #86 from davidmoebius/builder_header

[task] added and refactored Builder header to User and Group
[fix] fixed exception messages from 'can't' to standard 'must not'
Merge pull request #87 from dacrome/fix-exception-message

[fix] fixed exception messages from 'can't' to standard 'must not'