This is a wonderful contribution! Thanks for all of your hard work. I have successfully installed the latest version on Moodle 2.2.1+ and have, thus far, had no issues.
I have one request that may be a big one but I wanted to propose it here to see if others would be interested as well as to see if I could get some feedback on how difficult it would be to include.
What we would really like (benefit from) is the ability to format sessions in a csv file (via Excel etc.) and then upload those sessions in bulk. This would make it very easy for us to generate many sessions at once. As it is now, it does require quite a bit of time to set up the sessions if you are, for example, attempting to set up ten sessions a week (40+ sessions a month). It isn't impossible for us to use the plugin (mod) as it is but this capability would be the icing on the cake for us.