Major Features:
- Complete batch processing system with 4-5x performance improvements
- LSTMBatchTrainer for efficient batch training
- Batch prediction capabilities
- Comprehensive example with performance benchmarks

Performance:
- 4.3x speedup with batch size 8
- 5.4x speedup with batch size 16
- Efficient memory utilization
- Scalable across different dataset sizes

Technical Improvements:
- Batch forward/backward passes in LSTM cells
- Enhanced loss functions with batch support
- New caching structures for batch training
- Maintains full backward compatibility