Return the list of file changed in the current branch compared to `master`

def files_changed():
    """
    Return the list of file changed in the current branch compared to `master`
    """
    with chdir(get_root()):
        result = run_command('git diff --name-only master...', capture='out')
    changed_files = result.stdout.splitlines()

    # Remove empty lines
    return [f for f in changed_files if f]