Feature Request: Contributor Statistics (BB-4787)

Had an idea recently. Bitbucket should add a tab to each repo with Contributor Statistics. Number of lines of code, lines of code overwritten (usually either mistakes/bugs or inefficient), percentage of lines kept vs lines overwritten, number of commits, etc. Obviously this would be mostly informational as repo's are constantly in flux, but I want to know if my boss, my co-workers, or I wrote the most code in a given project.

Just thought it would be really cool, and not too difficult for Atlassian to add...