Implement six new trimming methods on String: trim(), trim(chars), trimEnd(), trimEnd(chars), trimStart(), trimStart(chars). The core logic uses a private trim_ helper that accepts a chars string, converts it to code points, and iterates from the start and/or end of the string to remove matching characters. Default whitespace set is tab, carriage return, newline, and space. Includes comprehensive test coverage for default and custom character trimming, edge cases (empty strings, all-trimmed strings, 8-bit clean data), and runtime error when chars argument is not a string.
Fix three occurrences of the misspelled word "seperator" in the string module
documentation, updating both the function signature header and the descriptive
text in the split() method section.
Simplify arithmetic in wrenStringFind by removing startIndex offset from loop range and using start directly as the initial index. Rename internal primitives to string_indexOf1 and string_indexOf2 for clarity. Add validateIndex helper to clamp negative start values and reject out-of-bounds indices. Update documentation to describe the new start parameter behavior. Add comprehensive test suite for indexOf with start, including negative offsets, edge cases, and error conditions.
Restructure the documentation hierarchy to prepare for documenting additional built-in modules. Move all core library documentation from `doc/site/core/` to `doc/site/modules/core/`, rename `modules.markdown` to `modularity.markdown`, remove `^category` metadata lines from all affected pages, update cross-reference links to use relative paths under the new structure, and add a TODO placeholder to the Class class page.
Bob Nystrom
Andew Jones
Sven Bergström