- update to 4.2.1:
- CI: Fix version specification and test on CI for PyPy/Windows #2608
- Doc: Clarified Image.save:append_images documentation #2604
- CI: Amazon Linux and Centos6 docker images added to TravisCI #2585
- Image.alpha_composite added #2595
- Complex Text Support #2576
- Added threshold parameter to ImageDraw.floodfill #2599
- Added dBATCH parameter to ghostscript command #2588
- JPEG: Adjust buffer size when icc_profile > MAXBLOCK #2596
- Specify Pillow Version in one place #2517
- CI: Change the owner of the TRAVIS_BUILD_DIR, fixing broken docker runs #2587
- Fix truncated PNG loading for some images, Fix memory leak on truncated PNG images. #2541, #2598
- Add decompression bomb check to Image.crop #2410
- ImageFile: Ensure that the `err_code` variable is initialized in case of exception. #2363
- Tiff: Support append_images for saving multipage TIFFs #2406
- Doc: Clarify that draft is only implemented for JPEG and PCD #2409
- Test: MicImagePlugin #2447
- Use round() instead of floor() to eliminate zero coefficients in resample #2558
- Remove deprecated code #2549
- Added append_images to PDF saving #2526
- Remove unused function core image function new_array #2548
- Remove unnecessary calls to dict.keys() #2551
- Add more ImageDraw.py tests and remove unused Draw.c code #2533
- Test: More tests for ImageMorph #2554
- Test: McIDAS area file #2552
- Update Feature Detection #2520
- CI: Update pypy on TravisCI #2573
- ImageMorph: Fix wrong expected size of MRLs read from disk #2561
- Docs: Update install docs for FreeBSD #2546
- Build: Ignore OpenJpeg 1.5 on FreeBSD #2544