The Version History section shows you the updates made to BackupBuddy since version 126.96.36.199. The most recent updates will be at the bottom. This could also be considered the BackupBuddy changelog, changelog, etc. There is also a text version that you can find in the root of the BackupBuddy plugin itself. The filename is history.txt.
Housekeeping & Troubleshooting
BackupBuddy automatically cleans up after itself on a regular basis. You may force various cleanup procedures to happen sooner or troubleshoot some uncommon issues using the tools included in this section.