Changes:
- Support for solving Wordle.
- Wordsmith module for guessing an explanation for a sequence.
- Improvements to equation solutions.
- Support for both 0 and 1-based key additions and subtractions.
- Additional filters (distinct letters, delta, substrings).
- Support for knight movement pattern in wordsearch.
- New lists for surnames and other items.
- Fix bug in wordsearch where it did not search to the edge.