Another update pushed to the Helios server today, with two important enhancements:

1. You can bulk upload voters using comma-separated values (basically Excel.) Currently, the Google App Engine timing limitation means you probably want to bulk upload in chunks of 40 or less, but still much better than one at a time.
2. You can now specify that a question accepts more than one possible answer. Very useful for letting voters select 2 out 7 board members, for example. The crypto proofs are all updated to take into account this enhancement.