Revert "Merge branch 'master' of https://github.com/githubtrainer/poetry"

This reverts commit b97ea16610fd7e73d26bbac1dc90c28b4ee84bc9, reversing
changes made to 455ce4374e84b2f09712732c17742545c1745cee.
Revert "Merge branch 'master' of https://github.com/githubtrainer/poetry"

This reverts commit b97ea16610fd7e73d26bbac1dc90c28b4ee84bc9, reversing
changes made to 4a299bd73f6343241ac32e1fa88f7f412a56adf3.