4.5.1
Changes:
- Fix app/Process.py to cope with None mimetype (#620)
- Add security policy (#621)
- Better error handling in WPSRequest.json() (#622)
- Fix output mimetype assuming string (#626)
- Resolve invalid Exception.msg unknown attribute (#629)
- An input default value is only set when min_occurs==0 (#631)
- Fix Sphinx build for UbuntuGIS packages (#634)
- Remove gdal from dependencies (#638)
- Fix bug triggered when storage requires the creation of recursive directories (#636)