release to pypi on windows, linux and macos

[caishanli]

No description provided.

[codecov-io]

Codecov Report

Merging #2644 (e0d3afd) into master (9268c25) will decrease coverage by 0.99%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2644      +/-   ##
==========================================
- Coverage   87.63%   86.63%   -1.00%     
==========================================
  Files         478      390      -88     
  Lines       92139    69475   -22664     
==========================================
- Hits        80743    60188   -20555     
+ Misses      11396     9287    -2109     

Impacted Files	Coverage Δ
src/layer/arm/convolution_1x1.h	68.79% <0.00%> (-6.03%)	⬇️
src/allocator.cpp	71.30% <0.00%> (-5.01%)	⬇️
src/layer/arm/convolution_3x3.h	56.79% <0.00%> (-4.07%)	⬇️
src/layer/x86/reshape_x86.cpp	90.39% <0.00%> (-3.62%)	⬇️
src/layer/crop.cpp	79.09% <0.00%> (-3.54%)	⬇️
src/layer/x86/scale_x86.cpp	91.91% <0.00%> (-3.43%)	⬇️
src/layer/x86/dropout_x86.cpp	91.89% <0.00%> (-3.35%)	⬇️
src/layer/x86/prelu_x86.cpp	92.18% <0.00%> (-3.19%)	⬇️
src/layer/x86/relu_x86.cpp	90.69% <0.00%> (-2.53%)	⬇️
src/layer/x86/hardswish_x86.cpp	94.11% <0.00%> (-2.44%)	⬇️
... and 184 more

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[caishanli]

I don't know why ci linux-arm-xxx failed.

[nihui]

I don't know why ci linux-arm-xxx failed.

ignore them :D