NeuInk 0.4.0

Widgets on Home, and everything on it is an app. The new screens are in
FEATURES.md. Settings, books and reading stats carry over; the time per
app on the Battery page starts empty once (the battery graph is kept).

• Vega Home widgets on a two-by-three grid at the top of the first page, in 1x1, 2x1 and 2x2: current book (author,
  pace, time left, estimated finish; stat tiles in 2x2), recent books (covers with progress), calendar (styled as
  the Clock app's month, a dot on the days read, optionally from a number of minutes), date, clock (digital in five
  digit sizes or analog, with or without the date), streak (this week's bars, Monday or Sunday first; totals in
  2x2), reading goal (minutes a day against a goal), up next (the series' next book, else the folder's), highlight
  (a saved one, a new one each day) and battery (with the Battery page's graph). A widget takes the first free place
  it fits in; the app icons shrink to make room and rows that do not fit move to the next page. The default layout
  is the one before: the greeting, the current book, the icons.
• Edit mode, from the pencil in the layout panel: drag widgets and icons into place (bars at the screen's sides take
  an icon to another page), tap a widget for its size and data (shown live behind the panel, which hangs from the
  top for widgets in the lower half), tap an icon to hide it, Add widget and Done at the top. Edit mode only
  refreshes fast and cleans the screen once when it ends. One-time introductions explain Home's gestures and edit
  mode.
• Layout panel: columns (2-6) and rows (1-8) as numbers side by side, about two thirds of the screen high, scrolls a
  page at a time, and shows its changes on Home behind it.
• Settings > Apps lists everything with an icon on Home, Settings and Library included, on gray squircles. An app's
  page shows its icon large, Open and Enable / Disable (whether it shows on Home), then its settings (the Clock's,
  Sudoku's, the File Manager's) or a note that it has none. Home can be left empty.
• The File Manager's page has Ask to open as USB drive: off, plugging into a computer no longer offers the SD card.
• Control Center: a Settings button in its top right corner; the eighth button now defaults to Night light.
• Battery page: one line through the whole day, the time the reader was awake shaded under it; time and charge for
  every app, Home, Settings, Files, Library, the OPDS browser, Reading stats and Saved included, the most used first.
  The runtimes and the graph's estimate come from one drain figure that leaves out every rise (a slow charge climbs
  one percent at a time and counted as no loss before), so the estimate can no longer climb and the runtimes follow
  the drain. The graph is a shared component (components/BatteryGraph).
• General > Software updates: the NeuInk logo large and the installed version; after an update check, the version
  it found, and when that one is newer but was not installed, "New version available" with an Update now button.
• Fixed: the reader menu's Font size for a font with five sizes or fewer (an SD-card bitmap font) opened an empty
  card whose invisible buttons jumped to the smallest or largest size; its row of size buttons now shows.
• Fixed: the Battery page's list of apps ran off the screen; it scrolls a page at a time now.
• Fixed: installed SD-card reader fonts fell back to Lexend Deca. The Vega greeting opened the whole Bitter family in
  every reader size in the font arena the reader shares; it now opens one face at one size.
• Reading time per day for the last 64 days, in /.crosspoint/daily_reading.bin (the stats format and the stats sync
  are unchanged). The time-left, finish-date and pace estimates, the stats tile and the level bar are one shared copy
  each.
• Icons and the boot logo are inline constexpr: each is in the firmware once instead of once per file that uses
  it (22 KB less).
• New Lucide icons (calendar, calendar-1, trash-2, target, quote, skip-forward, external-link, eye, eye-off) and a
  55 px set of clock digits.

Install: download firmware-x4-pro.bin and update from Settings > General > Software updates, or copy it to the SD card. The X4 Pro is the only supported and tested reader.