Please upgrade to 2.2 here.
The 2.0 and 2.1 branches are no longer being updated.
Mentioning users with spaces in their names
Did the question of how to do this ever get resolved? I've not got 18.104.22.168 installed (really need to wait for the categories to settle down and be more stable first), so I can't test that, but I know there was discussion about how it would work.
2.0.13 Does not support sending out emails to users with spaces in their names. It makes sense to me to allow a plus (+) to be used to join the names together, e.g. @Fred+Bloggs
<--you can see the problem here already
Any ideas or does anyone know whether this now works in 2.0.17?