Add changelog item.
|Please view this file on the master branch, on stable branches it's out of date.|
|v 7.10.0 (unreleased)|
|- Allow users to be invited by email to join a group or project.|
|- Fix broken file browsing with a submodule that contains a relative link (Stan Hu)|
|- Fix persistent XSS vulnerability around profile website URLs.|
|- Fix project import URL regex to prevent arbitary local repos from being imported.|