2.7.4 Update — EndlessShinyBlues Steam update #524878

Hibiscus protect if `LockBitmap` returns nullptr when you click mouse or space that will trigger page change during fast forwarding, will not exit fast forward if not clicked during display routine, which is hard to achieve in FF mode history reused text splitter but didn't protect it's original value, if you open history page, close, then save, the info in save data is not current line displayed `@Forward` / `@Backward` used param that only updated during performance routine during parsing routine, which causes order update error parse error if current line is not current language parse error if blank character follows the language prefix