nncase v1.8.0

New features

• Add Compress (#625)
• Support NMS/TTS (#623)
• Add ReduceSum (#635)
• Add LayerNorm (#626)
• Add GatherElements (#642)

Bug fixes

• fix argmax min value (#619)
• fix bitcast buffer allocation (#632)
• fix build for archlinux/manjaro (#633)
• fix preprocess deq when model has focus (#628)