v0.5.0

• This release makes more changes to the tests and documentation in reponse to the review process for the submission to JOSS (see below).
• In particular, see the following issue: #97
• Changed the method of handling dynamic versioning. For now the package __version__ attribute is still defined, but it is deprecated and will be removed in 0.6.0. Use from importlib.metadata.version('redflag') to get the version information instead.
• Changed the default get_outliers() method from isolation forest ('iso') to Mahalanobis ('mah') to match other functions, eg has_outliers() and the sklearn pipeline object.
• Updated actions/setup-python to use v5.