Removed redundant extra code from plotUtils.
Removed redundant redundancy in pydarn/plotting/fan.py
Typo.
Changed variable name to date_time.
Merge branch 'master' into redundancy-plotUtils-redundancy
Merge branch 'master' into redundancy-plotUtils-redundancy
Add a new draw keyword which will allow you to init mapobj without drawing
Extend the mapObj draw handling
Add altitude awareness in mapObj call
Merge branch 'master' into redundancy-plotUtils-redundancy
Merge branch 'master' into redundancy-plotUtils-redundancy
Merge pull request #57 from jspaleta/Feature_init_mapobj_without_drawing

Add a new draw keyword which will allow you to init mapobj without drawing
Added tests to __main__ for testing coordinate conversion.
Fixed bug in __call__. Also added warning when user doesn't specify datetime argument.
Removed extra self. Also added more testing.
Reverted to datetime and dateTime keywords for now.
Missed some date_time.
Fixed lack self for attributes.
Merge pull request #61 from vtsuperdarn/bugfix_mapObj_inverse_conversions

Bugfix: mapObj inverse conversions when coordinate systems change
provided tests for multiple-step conversions work for me results match expected for all tests.
Fixing merge conflict.