1.8.1

This release contains some bug fixes and UI improvements. Replays and saves are
fully compatible with 1.8.

Thanks to contributors animal_waves and flend.

Bug fixes

• Fixed a playback out-of-sync error when walking into a secret door to
  discover it
• Fixed a bug where inspecting an out-of-sight lumenstone would say "you
  remember seeing a lumenstone from depth 0" instead of the depth it was found
  at
• Item quantities are now remembered correctly on leaving and revisiting a level
• Fixed description of remembered items when hallucinating

Other changes

• Recordings are now sorted by date descending (newest on top) and all dates
  (high scores, saved games, recordings) are now displayed as "YYYY-MM-DD"
• Fixed an issue with ring descriptions where an unidentified ring could be
  revealed as negative after reading a scroll of remove curse
• Added F12 and Alt+Enter as shortcuts for full-screen mode