Fourpage v1.0.7

Fixed

• The library no longer stutters right after launch while books load in the
  background:
  • Books are read on a background thread instead of the one that draws the
    screen, with a short pause between books.
  • Books still showing a placeholder load first.
  • Loading a book no longer refreshes the whole Home screen.
  • Loading placeholders animate without the extra drawing work they caused.
  • Covers are decoded at the size they're shown, not at full resolution.
  • Home only builds the book rows and tiles that are on screen.