HDF5 Serialization and N-Dimentional Convolution/Cross-Correlation implemented

• HDF5 Serialization https://github.com/ShigekiKarita/grain/tree/v0.0.6/source/grain/serializer.d
• Convolution/Cross-Correlation
  • CPU implementation supports arbitrary number of convolution dim but slow
  • CUDNN implementation supports many optimized algorithms (winograd/fft/precumted gemm etc) but limited dim and shapes