Made some changes in sunpy.wcs. 1. Changed 'deg' to 'degrees' in wcs.py and test_wcs.py. 2. Added an else clause in wcs.py:convert_angle_units() that raises a ValueError if an invalid unit is passed.
Made some changes in sunpy.wcs.
1. Changed 'deg' to 'degrees' in wcs.py and test_wcs.py.
2. Added an else clause in wcs.py:convert_angle_units() that raises a ValueError if an invalid unit is passed.

Alex-Ian-Hamilton/sunpy,Alex-Ian-Hamilton/sunpy,Alex-Ian-Hamilton/sunpy,dpshelio/sunpy,dpshelio/sunpy,dpshelio/sunpy