Merge branch 'hotfix/1.1.0.4' into develop
Added new Magnitude conversion class replacing eq.magKtomagV. All magnitudes can now be converted between if there is an appropriate conversion factor in the table. You can do this manually using astroclasses.Magnitude and using the .convert option.

added new flags to handle each magnitude conversion case
increased version number
python 2.6 fix in magnitude code (old style dict comprehensions)
fixed format and tight_layout errors in python 2.6
Merge branch 'release/1.1.1'