- Remove the paywall and add the ability to support us by voluntary donation instead
- Switch from ae_users to Sugar Pond Accounts (using devise, devise_cas_authenticatable and cancan)
- Gender is now a freeform text field by default (although survey creators can still make it any type of question they choose)
- Graphs: Add a checkbox to allow survey admins to omit responses with no answer from the graphed set (thanks Tim Lasko for the idea)