added/updated docstrings for convertCoords, getSpaxelAPI, getSpaxelXY
added/updated docstrings for convertCoords, getSpaxelAPI, getSpaxelXY
bretthandrews/marvin,sdss/marvin,bretthandrews/marvin,bretthandrews/marvin,sdss/marvin,albireox/marvin,albireox/marvin,bretthandrews/marvin,sdss/marvin,sdss/marvin,albireox/marvin,albireox/marvin