OpenBSDisks2 0.4.0

What's Changed

• Add GitHub Actions by @sizeofvoid in #9
• Use unveil(2) to limit execution to mount_*(8) and umount(8) by @klemensn in #10
• V0.4.0 by @sizeofvoid in #12
• and other small bugfixes

New Contributors

• @klemensn made their first contribution in #10

Full Changelog: v0.3.1...v0.4.0