SIMD. fix list (+6 squashed commits)

Squashed commits:
[c45b871] update for Pillow-SIMD 3.4.0
[bedd83f] no alpha compositing in this release
[e8fe730] update results for latest version
add Skia results
[a16ff97] add SIMD changes
[82ffbd6] fix readme (+4 squashed commits)
Squashed commits:
[85677f9] fix error
[f44ebb1] update results for unrolled implementation
[83968c3] fix #4
[cd73c51] update link (+11 squashed commits)
Squashed commits:
[5882178] correct spelling
[a0e5956] Why Pillow-SIMD is even faster
[108e72e] Why Pillow itself is so fast
[e8eeda1] spelling fixes
[e816e9c] spelling
[d2eefef] methodology, why not contributed
[2e55786] installation and conclusion
[9f6415e] more info
[67e55b7] more benchmarks
test files
[471d4c5] remove spaces
[904d89d] add performance tests
[4fe17fe] simple readme

SIMD. clarify Following fork

SIMD. update readme

SIMD. update versions in readme

SIMD. Changes

SIMD. version

SIMD. version

SIMD. version

SIMD. version

SIMD. version

SIMD. version

SIMD. Rewritten the Pillow-SIMD readme

SIMD. Updated according to the review

SIMD. fix markup

SIMD. replace benchmarks with link to pillow-perf

SIMD. for resizing

SIMD. Update readme

SIMD. fix mark

SIMD. Update Uploadcare logo in readme

SIMD. pypi readme, update setup

Add x86 info

CHANGES.SIMD.rst

@@ -0,0 +1,144 @@
+Changelog (Pillow-SIMD)
+=======================
+
+9.0.0.post1
+-----------
+
+- Fixed possible overflow in LUT processing
+- Restored compatibility with Visual C Compiler
+
+
+7.0.0.post4
+-----------
+
+- Filter: fixed wrong offset handling for 3x3 single-band version
+
+7.0.0.post3
+-----------
+
+- ColorLUT: fixed potential access violation, up to 2x faster
+
+7.0.0.post2
+-----------
+
+- ColorLUT: SSE4 & AVX2
+
+7.0.0.post1 & 6.2.2.post1 & 6.1.0.post1 & 6.0.0.post2
+-----------------------------------------------------
+
+- Bands: access violation in getband in some environments
+
+7.0.0.post0
+-----------
+
+- Reduce: SSE4
+
+6.0.0.post1
+-----------
+
+- GCC 9.0+: fixed unaligned read for ``_**_cvtepu8_epi32`` functions.
+
+6.0.0.post0 and 5.3.0.post1
+---------------------------
+
+- Resampling: Correct max coefficient calculation. Some rare combinations of
+  initial and requested sizes lead to black lines.
+
+4.3.0.post0
+-----------
+
+- Float-based filters, single-band: 3x3 SSE4, 5x5 SSE4
+- Float-based filters, multi-band: 3x3 SSE4 & AVX2, 5x5 SSE4
+- Int-based filters, multi-band: 3x3 SSE4 & AVX2, 5x5 SSE4 & AVX2
+- Box blur: fast path for radius < 1
+- Alpha composite: fast div approximation
+- Color conversion: RGB to L SSE4, fast div in RGBa to RGBA
+- Resampling: optimized coefficients loading
+- Split and get_channel: SSE4
+
+3.4.1.post1
+-----------
+
+- Critical memory error for some combinations of source/destination 
+  sizes is fixed.
+
+3.4.1.post0
+-----------
+
+- A lot of optimizations in resampling including 16-bit
+  intermediate color representation and heavy unrolling.
+
+3.3.2.post0
+-----------
+
+- Maintenance release
+
+3.3.0.post2
+-----------
+
+- Fixed error in RGBa -> RGBA conversion
+
+3.3.0.post1
+-----------
+
+Alpha compositing
+~~~~~~~~~~~~~~~~~
+
+- SSE4 and AVX2 fixed-point full loading implementation.
+  Up to 4.6x faster.
+
+3.3.0.post0
+-----------
+
+Resampling
+~~~~~~~~~~
+
+- SSE4 and AVX2 fixed-point full loading horizontal pass.
+- SSE4 and AVX2 fixed-point full loading vertical pass.
+
+Conversion
+~~~~~~~~~~
+
+- RGBA -> RGBa SSE4 and AVX2 fixed-point full loading implementations.
+  Up to 2.6x faster.
+- RGBa -> RGBA AVX2 implementation using gather instructions.
+  Up to 5x faster.
+
+
+3.2.0.post3
+-----------
+
+Resampling
+~~~~~~~~~~
+
+- SSE4 and AVX2 float full loading horizontal pass.
+- SSE4 float full loading vertical pass.
+
+
+3.2.0.post2
+-----------
+
+Resampling
+~~~~~~~~~~
+
+- SSE4 and AVX2 float full loading horizontal pass.
+- SSE4 float per-pixel loading vertical pass.
+
+
+2.9.0.post1
+-----------
+
+Resampling
+~~~~~~~~~~
+
+- SSE4 and AVX2 float per-pixel loading horizontal pass.
+- SSE4 float per-pixel loading vertical pass.
+- SSE4: Up to 2x for downscaling. Up to 3.5x for upscaling.
+- AVX2: Up to 2.7x for downscaling. Up to 3.5x for upscaling.
+
+
+Box blur
+~~~~~~~~
+
+- Simple SSE4 fixed-point implementations with per-pixel loading.
+- Up to 2.1x faster.

PyPI.rst

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+
+`Pillow-SIMD repo and readme <https://github.com/uploadcare/pillow-simd>`_
+
+`Pillow-SIMD changelog <https://github.com/uploadcare/pillow-simd/blob/simd/master/CHANGES.SIMD.rst>`_
+
+`Pillow documentation <https://pillow.readthedocs.io/>`_