Make kapteyn library optional for Map display.
Make kapteyn library optional for Pointing display.
Fix typo.
Make distance origin convention starting from 0. Remove some Fortran duplicated code.
Conversion to astropy's wcs module.
More 1-based index work.
Expose create_fitsheader_for.
Make astropy's WCS handle input of ndim != 2 and flag the code hoping that the bug is fixed upstream.
Port tamasis fix for non posix locale.
Cleanup pointing matrix modules.