Version 13.1p

This day marks 15 years since the first release of HyperRogue. Thanks to all the players for enjoying the game, and all the people whose contributions of all kind (ideas, bug reports, code, community...) made it so much better than the original!

The anniversary comes with an update:

• the Android version should hopefully work better on newer versions of Android (crash when paused, part of screen to use, no longer use bold font)
• Redesigned the menus in the Hypersian Rug mode, including a new approximately isometric embedding "Hilbert Rug"
• fixed crashes in infinite-order tilings and "backed" tilings
• Orb of the Fish is not useless in Cursed Canyon (thanks to @jdemeyer)
• Free Fall treasure generation now depends on correct kills (thanks to @jdemeyer)
• other minor fixes/new options