tree 4.0.9

What's Changed

• Merge to main for MWM WD VAC for dr19 by @joelbrownstein in #100
• add MOS_TOO env var by @joelbrownstein in #101
• Removes deprecated distutils by @havok2063 in #103
• Bump the version and create a new tag by @havok2063 in #106
• Ipl3 by @joelbrownstein in #107
• Adding apogee paths to dr19 by @havok2063 in #108
• Adds simple pyproject by @havok2063 in #109
• updating docs for dr19 by @havok2063 in #111
• allspec for ipl3 and vac cleanup by @joelbrownstein in #110
• Mos target dr19 by @joelbrownstein in #112

Full Changelog: 4.0.7...4.0.9