Based on a suggestion by Muhammad Ramadhan, event registrations can now have registration codes. Attendees can add a code when they register, and then see any registration options protected by the code. This can be used, for example, to offer reduced or complimentary registrations to keynote speakers or conference staff.

Based on a suggestion by Kai Zeng, we implemented "do-not-invite" TPC members. This category of TPC members is used to keep track of individuals who should not be invited to serve on the TPC. This is particularly useful if authors can volunteer for the TPC or if track chairs can add TPC members.

Zip files can now be encrypted with a password, using zipcloak, using the same access password that's used for reading the manuscript files for online proceedings.

Based on a suggestion by Chris Dyer, there is now a sub-menu in the TPC section to, I hope, make it easier to find various pages related to managing the TPC. Depending on feedback, we may also make similar changes to other pages that lead to multiple other pages, such as sessions and people.