We updated our version of importlib_metadata, so we might as well take
advantage of it to have full compatibility with the features introduced
in Python 3.10.

* Fix running scripts of editable deps on Windows
* Add Windows-specific logic to fix existing test

Co-authored-by: Kevin Conley <kevincon@users.noreply.github.com>

Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

also support symlinked temp directories

use `3.11-dev` instead of pinning a beta

Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

This change is intended to help migrate validation of sections in
pyproject.toml that are not relevant to poetry-core into poetry. This
allows for poetry frontend specific configuration to be introduced
without dependent changes in poetry-core.

* docs: Add warning about saving credentials

- Added warning about saving credentials to command line history
- Added angle brackets around `username` and `password` in docs, to
signify templating

Co-authored-by: Bjorn Neergaard <bjorn@neersighted.com>

* Remove `poetry.__init__` to convert to namespace package
* Add mypy settings to account for namespace package
* Update flake8 pre-commit config to allow namespace package
* Mark poetry-core as a third-party package in isort's config

repositories: new class LockfileRepository that can distinguish direct origin dependencies with same name and version