Hello everyone!
Since I had to do some complex server maintenance, I just enabled HTTPS support through the Let's Encrypt Project. If anyone else is as paranoid as me, feel free to use https://www.monthly.moe/, everything should work exactly as before.
As for the major web-site update I'm working on, it's on the way. Actually, the first part is mostly done, with a huge code cleanup, a much more customizable javascript-based calendar view, rewritten MAL synchronization logic, and a completely revamped API (used by the calendar view). All that's left is to expose some customization functionality to the user, secure the API, and test everything thoroughly. However, I recently started a job and moved to a different country, so I've been quite busy over the past month and a half. I'll try to get it done over the next month or two, but no guarantees.
Cheers