Stpipe

==================

- Workaround for setuptools_scm issues with recent versions of pip. [27]

==================

- Remove the default value of ``output_ext`` so subclsses can define it. [17]

- Remove specific dependency on stdatamodels DataModel class. [20]

==================

- Create package and import code from jwst.stpipe. [2, 11, 12]

- Create new CLI infrastructure and implement 'stpipe list'. [14]