* Add rewrite of spack checksum to include --verify and better add versions to package.py files
* Fix formatting and remove unused import
* Update checksum unit-tests to correctly test multiple versions and add to package
* Remove references to latest in stage.py
* Update bash-completion scripts to fix unit tests failures
* Fix docs generation
* Remove unused url_dict argument from methods
* Reduce chance of redundant remote_versions work
* Add print() before tty.die() to increase error readablity
* Update version regular expression to allow for multi-line versions
* Add a few unit tests to improve test coverage
* Update command completion
* Add type hints to added functions and fix a few py-lint suggestions
* Add @no_type_check to prevent mypy from failing on pkg.versions
* Add type hints to format.py and fix unit test
* Black format lib/spack/spack/package_base.py
* Attempt ignoring type errors
* Add optional dict type hint and declare versions in PackageBase
* Refactor util/format.py to allow for url_dict as an optional parameter
* Directly reference PackageBase class instead of using TypeVar
* Fix comment typo
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Co-authored-by: Tamara Dahlgren <dahlgren1@llnl.gov>
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