chore: Bump version (1.6.4)

fix: Autosave erroneous error log (#45)

fix: Handle the case of ebooklib failing to read an epub (#44)

refactor: "Fix" mypy 1.15 → 1.18.1 typecheck errors (#43)

feat: Simpler highlighting (#1) (#40)

fix: Only save in setBook if there's a book already loaded

ci: Disable release on push because it's too easy to do by accident

chore: Bump version (1.6.2)

fix(Customisation): Allow x and y selectors to take None (#39)

fix(log): Don't use getLevelNamesMapping (#38)

fix(StatsDock): WPM/PB text clipping (#37)

refactor: Lazy autosave construction + unmark dirty on save (#36)

fix(AboutDialog): # of books in progress (#35)

fix: Remove autosave on TypespeedView and StenoView (#34)

fix: Typespeed ints that should be floats (#33)