There is a plugin (found within the package manager) called simply 'Git' that does this -- you just call Git Blame from the bar (CTRL SHIFT P) and it'll show yo

There is a plugin (found within the package manager) called simply 'Git' that does this -- you just call Git Blame from the bar (CTRL SHIFT P) and it'll show you a line-by-line history of the whole file or selection.