This change shifts newline tokenization from the lexer's readRawToken into the parser's nextToken, allowing the grammar to selectively ignore newlines in specific contexts (e.g., after operators like "|", "is", "for", "if", "while") while treating them as errors in others (e.g., after "var", "new", "class", "static", before commas in lists). The lexer now emits TOKEN_LINE for semicolons and newlines uniformly, and the parser decides which to elide. Test files are updated to reflect the new error expectations and to remove tests for newlines that are now grammatically allowed.
Rename the IO.write method to IO.print, which now prints without a trailing newline, and add a new IO.print method that appends a newline after output. Update all benchmark, example, and test files to use IO.print instead of IO.write. Additionally, implement Unicode escape sequence parsing in the compiler's string tokenizer, supporting \uXXXX and \u{...} syntax with proper UTF-8 encoding for code points up to U+10FFFF.
Replace the global `io` singleton object with a static `IO` class, moving the `write` native from the instance to the metaclass. Update all benchmark, example, and test files to use `IO.write()` instead of `io.write()`.
- Add TOKEN_LINE matching after list elements in compiler to allow newlines before commas or closing brackets
- Add tests for list newline handling, EOF after comma/element, and class name inside body
- Remove resolved TODOs for default constructors, inherited fields, metaclass is checks, zero comparison, and bitwise not behavior
