v0.6.2

Adds the extract_docstrings.py script to the source distribution (sdist).

What's Changed

• Add test fixtures for instance reading by @N-Wouda in #372
• Add LS test for required clients by @N-Wouda in #370
• Add extract_docstrings script to sdist by @N-Wouda in #377

Full Changelog: v0.6.1...v0.6.2