New
Set answers for category details. A category detail can now offer a list to pick from instead of an empty text box. A book's binding is one of Hardcover, Paperback, Ebook; a record's format is one of LP, EP, Box Set. Picking beats typing. It means two people cataloguing the same book describe it the same way, which is what makes a catalogue worth searching in the first place.
Fixed
Search. The important one. Every item added since March was invisible to search. It was in the catalogue and on your shelf, but it never came back as a result. Renaming an item was also broken, as it carried on answering to its old name. It was worst exactly where it hurt most: you would go to add a book, search for the one already in the catalogue, find nothing, and create a second copy of it. Search now sees an item the moment it is added, and it keeps up when it is edited.
Searching by an item's details. Searching for country or year returned every item that had a country or a year filled in, rather than the ones you actually meant. Only the values are searched now, not the names of the fields.
This blog. Posts sat hard against the left edge of the page instead of being centred.
Under the hood
Search ran off an index that was built once in March and never updated again. Nothing updated it when an item was added or changed. It is now kept up to date by the database itself, as a property of the item rather than something we have to remember to refresh. It cannot quietly fall behind again.
Every fix above started as a test that should have existed months ago.
If you ended up with two of something because search couldn't find the first one, now you know why.