Experimental features are projects/features that aren't quite ready. They may break (or disapper) at any time.
All these features can be enable from Options in menubar, toggle the feature you would like to use and, let us know what you think by joining our Thermal Discord server.
Show diff of a file in more visualized way, which includes additions and deletion of lines by adding numbering and color.
Adding a short/long description to the commit is helpful to understand what the commit is actually about.
Appending a short message in the description of a commit message.