removes jetbrains annotation dependency; bump guava and joda-time

it is not in any public repository, so it makes it too
difficult to build this project. the policy is now that
everything - if not explicitely mentioned otherwise in
the javadocs - must be not null.
[maven-release-plugin] prepare release releases/1.0.2
[maven-release-plugin] prepare for next development iteration
always connect Transport returned from SessionFactory
[maven-release-plugin] prepare release releases/1.0.3
[maven-release-plugin] prepare for next development iteration