* refactor: simplify logic that determines which Python version is used
* feat: which to output path only, version to output full current version meta
* fix: command used in shims
* chore: bump version to 0.0.7
* feat: add support for defining version via .python-version
* test: coverage for .python-version support
* fix: double-printing due to untrimmed .python-version read
* refactor: extract shared logic determining which python version is used
* feat: default to unshimmed python if no version specified
docs: mention of how system-python is evaluated
* refactor: extract python version determining funcs
* wip: ensure that output from system python check is cleaned for stray spaces
* test: coverage for system python fallback
* refactor: unused constant
* chore: update version to 0.0.5