What are the tools and libraries that work with Bitbucket ?
VC, the version control system
Get and reference an issue in a commit message
git-commit-insert-issue (in MELPA) is a package that eases the process to reference an issue in a commit message. When you type "fixes #" for example, it fetches the list of open issues, makes you choose one in a list and writes it in the commit message. (it works with Gitlab and Github).