Update pillow to 6.2.1

[pyup-bot]

This PR updates pillow from 6.0.0 to 6.2.1.

Changelog

6.2.1

------------------

- This is the last Pillow release to support Python 2.7 3642

- Add support for Python 3.8 4141
[hugovk]

6.2.0

------------------

- Catch buffer overruns 4104
[radarhere]

- Initialize rows_per_strip when RowsPerStrip tag is missing 4034
[cgohlke, radarhere]

- Raise error if TIFF dimension is a string 4103
[radarhere]

- Added decompression bomb checks 4102
[radarhere]

- Fix ImageGrab.grab DPI scaling on Windows 10 version 1607+ 4000
[nulano, radarhere]

- Corrected negative seeks 4101
[radarhere]

- Added argument to capture all screens on Windows 3950
[nulano, radarhere]

- Updated warning to specify when Image.frombuffer defaults will change 4086
[radarhere]

- Changed WindowsViewer format to PNG 4080
[radarhere]

- Use TIFF orientation 4063
[radarhere]

- Raise the same error if a truncated image is loaded a second time 3965
[radarhere]

- Lazily use ImageFileDirectory_v1 values from Exif 4031
[radarhere]

- Improved HSV conversion 4004
[radarhere]

- Added text stroking 3978
[radarhere, hugovk]

- No more deprecated bdist_wininst .exe installers 4029
[hugovk]

- Do not allow floodfill to extend into negative coordinates 4017
[radarhere]

- Fixed arc drawing bug for a non-whole number of degrees 4014
[radarhere]

- Fix bug when merging identical images to GIF with a list of durations 4003
[djy0, radarhere]

- Fix bug in TIFF loading of BufferedReader 3998
[chadawagner]

- Added fallback for finding ld on MinGW Cygwin 4019
[radarhere]

- Remove indirect dependencies from requirements.txt 3976
[hugovk]

- Depends: Update libwebp to 1.0.3 3983, libimagequant to 2.12.5 3993, freetype to 2.10.1 3991
[radarhere]

- Change overflow check to use PY_SSIZE_T_MAX 3964
[radarhere]

- Report reason for pytest skips 3942
[hugovk]

6.1.0

------------------

- Deprecate Image.__del__ 3929
[jdufresne]

- Tiff: Add support for JPEG quality 3886
[olt]

- Respect the PKG_CONFIG environment variable when building 3928
[chewi]

- Use explicit memcpy() to avoid unaligned memory accesses 3225
[DerDakon]

- Improve encoding of TIFF tags 3861
[olt]

- Update Py_UNICODE to Py_UCS4 3780
[nulano]

- Consider I;16 pixel size when drawing 3899
[radarhere]

- Add TIFFTAG_SAMPLEFORMAT to blocklist 3926
[cgohlke, radarhere]

- Create GIF deltas from background colour of GIF frames if disposal mode is 2 3708
[sircinnamon, radarhere]

- Added ImageSequence all_frames 3778
[radarhere]

- Use unsigned int to store TIFF IFD offsets 3923
[cgohlke]

- Include CPPFLAGS when searching for libraries 3819
[jefferyto]

- Updated TIFF tile descriptors to match current decoding functionality 3795
[dmnisson]

- Added an ``image.entropy()`` method (second revision) 3608
[fish2000]

- Pass the correct types to PyArg_ParseTuple 3880
[QuLogic]

- Fixed crash when loading non-font bytes 3912
[radarhere]

- Fix SPARC memory alignment issues in Pack/Unpack functions 3858
[kulikjak]

- Added CMYK;16B and CMYK;16N unpackers 3913
[radarhere]

- Fixed bugs in calculating text size 3864
[radarhere]

- Add __main__.py to output basic format and support information 3870
[jdufresne]

- Added variation font support 3802
[radarhere]

- Do not down-convert if image is LA when showing with PNG format 3869
[radarhere]

- Improve handling of PSD frames 3759
[radarhere]

- Improved ICO and ICNS loading 3897
[radarhere]

- Changed Preview application path so that it is no longer static 3896
[radarhere]

- Corrected ttb text positioning 3856
[radarhere]

- Handle unexpected ICO image sizes 3836
[radarhere]

- Fixed bits value for RGB;16N unpackers 3837
[kkopachev]

- Travis CI: Add Fedora 30, remove Fedora 28 3821
[hugovk]

- Added reading of CMYK;16L TIFF images 3817
[radarhere]

- Fixed dimensions of 1-bit PDFs 3827
[radarhere]

- Fixed opening mmap image through Path on Windows 3825
[radarhere]

- Fixed ImageDraw arc gaps 3824
[radarhere]

- Expand GIF to include frames with extents outside the image size 3822
[radarhere]

- Fixed ImageTk getimage 3814
[radarhere]

- Fixed bug in decoding large images 3791
[radarhere]

- Fixed reading APP13 marker without Photoshop data 3771
[radarhere]

- Added option to include layered windows in ImageGrab.grab on Windows 3808
[radarhere]

- Detect libimagequant when installed by pacman on MingW 3812
[radarhere]

- Fixed raqm layout bug 3787
[radarhere]

- Fixed loading font with non-Unicode path on Windows 3785
[radarhere]

- Travis CI: Upgrade PyPy from 6.0.0 to 7.1.1 3783
[hugovk, johnthagen]

- Depends: Updated openjpeg to 2.3.1 3794, raqm to 0.7.0 3877, libimagequant to 2.12.3 3889
[radarhere]

- Fix numpy bool bug 3790
[radarhere]

Links

• PyPI: https://pypi.org/project/pillow
• Changelog: https://pyup.io/changelogs/pillow/
• Homepage: http://python-pillow.org