[CHANGES]
- Forbid the use of 'await' outside of 'async sub'
- Handle CXt_BLOCK contexts
- Handle SAVEt_CLEARSV and SAVEt_CLEARPADRANGE savestack entries
- Further documentation rework
[BUGFIXES]
- Fix off-by-one error on reading the savestack, resulting in a
number of false-"TODO" failures being fixed
- Fix parser logic for parenthesized 'await( ... )' expressions