v3.9.1

What's Changed

• Closes #329: Draw rectangles around Sites/Locations/Racks by @dreng in #462
• Fixes #463: Pull 462 causes export xml to fail by @dreng in #466
• Fixes #471: Group Locations frame and font color hardly readable with light theme by @dreng in #472
• Fixes #473: Show Power Feeds raises AttributeError by @dreng in #474
• Fixes #236: Saved filter doesn't reload show cables by @dreng in #475
• Fix #303: Server Error after adding an Object Count Widget by @dreng in #476
• prepare 3.9.1 by @mattieserver in #480

Full Changelog: v3.9.0...v3.9.1