Misc fixes for tests
Merge branch 'develop' of https://github.com/dbrattli/RxPY into develop

Conflicts:
	tests/test_observable_aggregates.py
Added some more tests, fixed bug with exception inheritance
Merge from feature/aggregates
Added schedule_periodic to base scheduler
Bumped version
Disabled test for now
Merge branch 'release/0.1.3'