added Z to datatime.time serializer to encode UTC timezone
reworked LossyTransforSerializer into a plain SetSerializer
added tests for serializer, statical definition of serializer lookup dictionary, and indiviual serializers for datetime, date, and time objects
fixed serializer lookup dictionary identation and using type name strings directly
refined testing of sets in serialiser
Merge pull request #15 from adrpar/serializer_utc_compliancy

Serialiser improvements and tests
handling errors in 'lymph request'
Merge pull request #20 from adrpar/nice_errors_lymph_request

handling errors in 'lymph request'
Added cython as a tox build dependency
Updated installation instructions
Fixed serializer tests
Merge pull request #23 from emulbreh/fix-serializer-tests

Fixed serializer tests
Added cython dependency for tox testenvs
Added xunit output for tox tests
work on doc
Merge pull request #21 from adrpar/documentation

Documentation
Added contributing notes
Merge pull request #22 from emulbreh/readme-update

Updated installation instructions
Added proxy declarations
Simplified declarations