Fix
* fix: Add requirements to manifest ([`ed25ecb`](https://github.com/python-semantic-release/python-semantic-release/commit/ed25ecbaeec0e20ad3040452a5547bb7d6faf6ad))
* fix(pypi): Add sdist as default in addition to bdist_wheel
There are a lot of outdated pip installations around which leads to
confusions if a package have had an sdist release at some point and
then suddenly is only available as wheel packages, because old pip
clients will then download the latest sdist package available. ([`a1a35f4`](https://github.com/python-semantic-release/python-semantic-release/commit/a1a35f43175187091f028474db2ebef5bfc77bc0))