v1.8: autosave, Spanish menus, any translation

What's new in v1.8

• Autosave (Options → Saves → Autosave): an Auto save-state slot, above slot 1, written every 1, 2, 5 or 10 minutes while you play a save file. Off by default. Thanks to @jaimepa17 (#7).
• The app in Spanish: every menu, dialog and setup screen, following the phone's language or chosen in Game → App language. Thanks to @jaimepa17 (#6).
• HUD buttons and cheats after a heart piece: the X/Y/R touch buttons and the cheats stopped working once Link's maximum health wasn't a whole number of hearts. Fixed by @jaimepa17 (#8).
• Any fan translation of the game: Mods → Portuguese (Brazil) translation → Install another translation (any language)… takes a translation's folder (Korean, for example). The built-in Portuguese translation no longer replaces it, and the button icon mod leaves the HUD text alone when the translation's font lacks the characters it needs.
• Recompiled game code built with wrapping integer arithmetic (as in the original project's #172): a signed overflow in the game behaves as it does on the Wii U instead of being undefined.

After updating, the game code is prepared again once (about 10 minutes). Updates from v1.7 install over the app and keep your saves and settings. If you are coming from v1.6 or older, see the README: back up your saves and uninstall first (v1.6's signing key was lost).

Tested on a Galaxy S20 FE (Adreno 650): Outset, Windfall, Dragon Roost Cavern, Forbidden Woods, Forest Haven, Hyrule and the Forsaken Fortress without crashes, autosave written in 0.5 s.