v0.6.7

This is the Focalboard May 2021 release with some great additions from our community! v0.6.7 adds MySQL support, along with URL and phone number properties, Mac app settings persistence, and improved UX.

Mac: Download or upgrade from the App Store
Windows: Download from the Windows Store, or download focalboard-win.zip
Linux: Download focalboard-linux.tar.gz
Personal Server: Follow the install or upgrade guide

Major updates in this release:
* Improved table headers, including double-click border to auto-fit. Thanks @sbishel!
* Added Todoist import script. Thanks @harshilsharma63!
* Added MySQL database support. Thanks @jespino!
* Added URL and phone number properties. Thanks @BharatKalluri!
* Added documentation for share board. Thanks @haardikdharma10!
* Persist Mac app settings. Thanks @Johennes!
* Improved board sorting without leading emoji. Thanks @Johennes!
* Added Prettier linting for SCSS. Thanks @signalwerk!
* Disable unused Mac tab menu. Thanks @@haardikdharma10!
* Fixed server lint issues. Thanks @harshilsharma63!
* Updated open button. Thanks @arjitc!