This commit introduces a comprehensive sequence dataset generator with the following key features:
- Dynamic pattern generation through operation composition
- Configurable complexity and sequence lengths
- Validation to ensure sequences are interesting and solvable
- Human-readable rule descriptions
- Comprehensive test coverage
- Iterator protocol support
- A convenient factory function
The implementation includes:
- `SequenceDataset` class for generating sequence completion tasks
- `PatternRule` for representing and applying sequence generation rules
- `PatternGenerator` for creating diverse pattern rules
- Extensive test suite to validate dataset generation
