White space.
Cleaned up imports and added a couple tests.
Simplified array flat/unflat test.
Properly make LRValue('') and LRComplex('') instead of LRValue(None), etc.
Added a type func for l.u.DimensionlessArray
Added missing @classmethod in LRComplex.__lrtype__.

This is why you should run tests, kids.
Explained meaning of <= operator in LRType docstring.
Spelling mistake fixed.
Explained <= in LRValue and simplified logic.
Added lots of array related tests and fixed bugs they exposed.
Merge branch 'new_units' of https://github.com/martinisgroup/pylabrad into new_units