A second hot-fix to address issues with features introduced in version 1.22.400, along with a few other fixes/changes.
- Do not display the "Key Used" message when an elevator receives the Master_Off message.
- Fixed the bug where Mohc's missles don't home vertically.
- Fix custom logics facing the wrong direction by @jerethk
- subtitles-en.txt: fix typo (indicatio6n -> indication) by @kevinfoley
- Allow user to load difficulty by @ifeldshteyn