migrate project to git
do not encode private attributes of super classes
implemented some more general tests
renamed directory src to lib
added more tests
fixed parameter order of asserts
fixed handling of stdClass in encoder
fixed some strings
added tests for special values
fixed decoding of stdClass objects
added stdClass handling tests
made attribute destinationClass of method decode optional
reorganized tests
added object array tests
fixed test description
added exception tests
removed wrong comment
throw exception if datetime is of wrong format
fixed bug: no exception was throws if datetime property was not a datetime object
added @JsonDate annotation tests