Most files suffered major changes

- Less ambiguous syntax
- Better parser (Chumsky only does tokenization now)
- Tidy(|ier) error handling
- Facade for simplified embedding
- External code grouped in (fairly) self-contained Systems
- Dynamic action dispatch
- Many STL additions

src/foreign_macros/write_fn_step.rs

@@ -21,7 +21,7 @@ use crate::interpreted::ExprInst;
 /// ```no_run
 /// // FIXME this is a very old example that wouldn't compile now
 /// use unicode_segmentation::UnicodeSegmentation;
-/// 
+///
 /// use orchidlang::{write_fn_step, Literal, Primitive};
 /// use orchidlang::interpreted::Clause;
 /// use orchidlang::stl::litconv::{with_str, with_uint};