Since typing-extensions@4 dropped support for Python 2 and started to support Python>=3.6 I propose to remove hard ping according to the CHANGELOG, I propose to remove hard pin of it and release new version without strict requirement for it because that package supports only Python>=3.6 according to classifiers.
Today, 15th of November, was released typing-extensions==4.0.0 (https://pypi.org/project/typing-extensions/#history).
Since typing-extensions@4 dropped support for Python 2 and started to support Python>=3.6 I propose to remove hard ping according to the CHANGELOG, I propose to remove hard pin of it and release new version without strict requirement for it because that package supports only Python>=3.6 according to classifiers.