Beta version 8.1.2

Note: Read comment in 8.1.1 release notes (below) about whether you should stay on the development (beta release) branch, or wait for ATN to approve the mainline release candidate.

I've been working on various improvements all weekend and I need to set this aside for now. This is the current state of the development branch. It is mostly minor bug fixes and performance improvements. Most will only affect edge cases, but users may actually notice a general performance improvement because of the logging method optimizations in particular.

• Optimize logging functions to reduce latency
• Improve reliability of setup/take-down process in overlay scripts
  • Note: restarting TB after upgrade is still recommended, although this will help smooth that process somewhat going forward
• Improve likelihood that the drafts folder column actually shows up when it's supposed to, including in newly created windows
• Several bug fixes for user defined scheduling functions
• Improve code style consistency