Renamed elliptical overlap file
Cythonize rectangular overlap code
Make docstrings uniform
Fix import
Remove unused import
Avoid repeating the logic for sanitizing/validating pixel positions
Suppress "eval" deprecation warning
Merge pull request #171 from astrofrog/simplify-pixel-positions

Avoid repeating the logic for sanitizing/validating pixel positions
Merge pull request #168 from astrofrog/rectangular-cython

Move rectangular_overlap to geometry subpackage and write it in Cython
Remove mentioning of 'extent' in aperture_core [skip ci]
Merge pull request #172 from bsipocz/docs_fix_links_III

Remove mentioning of 'extent' in aperture_core