Build wheels for python 3.8

[einarf]

Python 3.8 is out. We should probably build wheel for this soon. I suggest adding 3.8 wheels for 5.5.x, 5.6 and 6 (pre-release). Might give it a week or two at least to make dependecies catch up considerig libs like numpy and Pillow are not out yet.

moderngl master builds just fine with python 3.8 in windows.

[einarf]

py38 wheel check list

• numpy : https://pypi.org/project/numpy/#files
• pillow : https://pypi.org/project/Pillow/#files
• matplotlib : https://pypi.org/project/matplotlib/#files
• PyQt5 : https://pypi.org/project/PyQt5/#files
• PySide2 : https://pypi.org/project/PySide2/#files
• scipy : https://pypi.org/project/scipy/#files

Pillow and matplotlib wheels will probably arrive in a week or so : python-pillow/Pillow#4110
scipy are close to a release : scipy/scipy#10927

[hugovk]

Pillow 6.2.1 has now been released with wheels for Python 3.8.

[einarf]

matplotlib now as pre-release (3.2.0rc1) with 3.8 wheels. Getting closer. Hopefully we'll get new wheels out this week.

[einarf]

Looks like it's going to take quite some time for dependecies to sort out 3.8 wheels, but these are not crucual for moderngl and are mostly used by examples. We can add a version guard in examples/requirements.txt for now.

[sol-prog]

@einarf Hello, SciPy 1.3.2 was just released, wheels for Python 3.8 are available.

[einarf]

Great! I have built 3.8 wheels for moderngl today. Just need to verify the linux wheels are properly working.

[einarf]

5.5.4 is on pypi with python 3.8 wheels for all platforms