Update pillow to 5.3.0

[pyup-bot]

This PR updates Pillow from 5.2.0 to 5.3.0.

Changelog

5.3.0

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

- Changed Image size property to be read-only by default 3203
[radarhere]

- Add warnings if image file identification fails due to lack of WebP support 3169
[radarhere, hugovk]

- Hide the Ghostscript progress dialog popup on Windows 3378
[hugovk]

- Adding support to reading tiled and YcbCr jpeg tiffs through libtiff 3227
[kkopachev]

- Fixed None as TIFF compression argument 3310
[radarhere]

- Changed GIF seek to remove previous info items 3324
[radarhere]

- Improved PDF document info 3274
[radarhere]

- Add line width parameter to rectangle and ellipse-based shapes 3094
[hugovk, radarhere]

- Fixed decompression bomb check in _crop 3313
[dinkolubina, hugovk]

- Added support to ImageDraw.floodfill for non-RGB colors 3377
[radarhere]

- Tests: Avoid catching unexpected exceptions in tests 2203
[jdufresne]

- Use TextIOWrapper.detach() instead of NoCloseStream 2214
[jdufresne]

- Added transparency to matrix conversion 3205
[radarhere]

- Added ImageOps pad method 3364
[radarhere]

- Give correct extrema for I;16 format images 3359
[bz2]

- Added PySide2 3279
[radarhere]

- Corrected TIFF tags 3369
[radarhere]

- CI: Install CFFI and pycparser without any PYTHONOPTIMIZE 3374
[hugovk]

- Read/Save RGB webp as RGB (instead of RGBX) 3298
[kkopachev]

- ImageDraw: Add line joints 3250
[radarhere]

- Improved performance of ImageDraw floodfill method 3294
[yo1995]

- Fix builds with --parallel 3272
[hsoft]

- Add more raw Tiff modes (RGBaX, RGBaXX, RGBAX, RGBAXX) 3335
[homm]

- Close existing WebP fp before setting new fp 3341
[radarhere]

- Add orientation, compression and id_section as TGA save keyword arguments 3327
[radarhere]

- Convert int values of RATIONAL TIFF tags to floats 3338
[radarhere, wiredfool]

- Fix code for PYTHONOPTIMIZE 3233
[hugovk]

- Changed ImageFilter.Kernel to subclass ImageFilter.BuiltinFilter, instead of the other way around 3273
[radarhere]

- Remove unused draw.draw_line, draw.draw_point and font.getabc methods 3232
[hugovk]

- Tests: Added ImageFilter tests 3295
[radarhere]

- Tests: Added ImageChops tests 3230
[hugovk, radarhere]

- AppVeyor: Download lib if not present in pillow-depends 3316
[radarhere]

- Travis CI: Add Python 3.7 and Xenial 3234
[hugovk]

- Docs: Added documentation for NumPy conversion 3301
[radarhere]

- Depends: Update libimagequant to 2.12.1 3281
[radarhere]

- Add three-color support to ImageOps.colorize 3242
[tsennott]

- Tests: Add LA to TGA test modes 3222
[danpla]

- Skip outline if the draw operation fills with the same colour 2922
[radarhere]

- Flake8 fixes 3173, 3380
[radarhere]

- Avoid deprecated 'U' mode when opening files 2187
[jdufresne]

Links

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