Support direct links to source files on a given branch

I have a project where I commit a markdown file with API documentation. I also often share a link to the file so that other developers can read it (e.g. https://bitbucket.org/tburch/sampleProject/src/d8ecc190d82168ead837745dc58ab10e65d27c81/api.md?at=master). The problem with this is that the link is always to the file at that commit and they have to interact with the UI to get the lastest version. I'd love to be able to give them a link (like https://bitbucket.org/tburch/sampleProject/src/api.md?at=master) where it always returns the latest version of the file for the given branch. Is there a way to do this? If not, I'd love to have this feature added to BB.