stdatamodels 1.9.1

What's Changed

• drop use of json_id in walk_and_modify callbacks by @braingram in #244
• update warning filters in tests for pytest 8 by @braingram in #245
• prepare for rename to main by @braingram in #247
• JP-3520: Add ngroups to mask schema by @braingram in #249
• JP-3449: Add TMEASURE keyword to core schema by @emolter in #248
• JP-3519: Add noutputs and bunit to readnoise and superbias schemas by @tapastro in #250
• Prep for 1.9.1 release by @jhunkeler in #252

New Contributors

• @emolter made their first contribution in #248
• @jhunkeler made their first contribution in #252

Full Changelog: 1.9.0...1.9.1