Changes 3.1.0:
- Fixing test failures on Python 2.6/Windows
- Limit metadata tags when writing using libtiff
- Rolling back exif support to pre-3.0 format
- Fix Divide by zero in Exif, add IFDRational class
- Catch the IFD error near the source
- Added release notes for 3.1.0
- Updated spacing to be consistent between multiline methods
- Let EditorConfig take care of some basic formatting
- Restore gpsexif data to the v1 form
- Add /usr/local include and library directories for freebsd
- Updated installation docs for new versions of dependencies
- Removed unrunnable test file
- Changed register calls to use format property
- Added field type constants to TiffTags
- Allow saving RowsPerStrip with libtiff
- Enabled conversion to numpy array for HSV images
- Changed some urls in the docs to use https
- Removed logger.exception from ImageFile.py
- Removed warnings module check
- Changed arcs, chords and pie slices to use floats
- Update unit test asserts
- Fix command to invoke ghostscript for eps files
- Consistent multiline text spacing
- Removed unused lines in BDFFontFile
- Changed ImageQt import of Image
- Throw TypeError if no cursors were found in .cur file
- Fix crash in ImageTk.PhotoImage on win-amd64
- ExtraSamples tag should be a SHORT, not a BYTE
- Docs and code health fixes
- Updated freetype to 2.6.2
- Updated WebP to 0.5.0 for Travis
- Fix missing 'version' key value in __array_interface__
- Replaced os.popen with subprocess.Popen to pilprint script
- Catch OverflowError in SpiderImagePlugin
- Fix the definition of icc_profile in TiffTags
- Remove old _imagingtiff.c and pilplus stuff
- Fix Exception when requiring jpeg
- Dependency scripts for Debian and Ubuntu
- Added Usage message to painter script
- Add tag info for iccprofile, fixes
- Added some requirements for make release-test
- Flatten tiff metadata value SAMPLEFORMAT to initial value, fixes
- Fix handling of pathlib in Image.save. Fixes
- Make tests more robust
- Use correctly sized pointers for windows handle types.

(adam)