The plugin is missing a very helpful ability - when working in Match Branches mode we have a problem with developers feature branches which are short lived and have unique names and thus can currently only be matched with the fallback branch - master.
The requested enhancement would be to supply the ability to configure the fallback branch (e.g. in that case one can use a development branch), while having a default of the master branch.
I think this small addition would benefit all those practicing a full cycle CI/CD process.
I hope you will find this worth adding (we for sure will use it ASAP).