Change python API for tags to just consistently call result.tags(new_tags, gone_tags).
[third_party/subunit] / shell /
drwxr-xr-x   ..
-rw-r--r-- 2550 README
drwxr-xr-x - share
-rw-r--r-- 9863 subunit-ui.patch
drwxr-xr-x - tests