Removed plane and solid angle as a unit dimension in the unitval class. It creates unitless objects instead. The library still uses unit_ANGLE_PLANE.m and unit_ANGLE_SOLID.m as a base so that you could make a base that didn't use radians for angle but it will still be dimensionless. I'm still considering removing the ability to change the base angle from radians as allowing this means more defensive coding when doing angle calculations.
Correct old usage of the in method to the new convert method.
Initial commit
Merge branch 'master' of https://github.com/ryangray/matlab_units