In the last few days: Changed WSN Forum's category names to use <h2> tags for better SEO. Converted the registration defaults to use a serialized array instead of the previous custom format, and added a helper function for changing a registration default. Did a lot of code refactoring for 9.2. Improved the details of parameters in backtraces in bug reports.

Made a lot of progress on the ability for the upgrader to update templates and styles from a theme instead of from the standard. Hopefully this will be finished for 9.2.1. After it's finished I'm hoping to incorporate simple theme selection (with just the best themes shown) into the installer, instead of the guided start. Then at some point I'll try to incorporate bootswatch to let people visually choose the coloring for bootstrap themes.