v0.1.2

Fixed

• Book downloads from OPDS readers no longer fail with 401. The OPDS
  catalog's acquisition and cover links point at this plugin's file/cover
  routes, which answered an unauthenticated request with a bare 401 — no
  WWW-Authenticate challenge — so OPDS readers (KyBook and others) that
  wait for the challenge before sending credentials could browse the catalog
  but never download a book. Both routes now advertise the Basic challenge.