changes to mapbase
first modifications for map
few more changes to map
merge conflict resolve
some more changes
resolved some error, others still remain
resolved more errors
changed the doc strings, one error remains
some more changes
resolved some error, others still remain
resolved more errors
conversion still dones't work
added wcs property
Changed wcs module to accept quantities
merged placholer
Three errors in wcs remaining
changed mapbase.py to accept the integrated wcs
Merge branch 'placeholder' into maps
added tests for convert_pixel_to_data and convert_data_to_pixel in test_wcs.py
solved some errors