Min2net

- Edit the Reconstructed MI of the Supplementary Materials Fig. S1
- Change default data_format of DeepConvNet and EEGNet from `channels_last` to `channels_first` (our paper and the original use `channels_first`)
- DeepConvNet and EEGNet can use both `channels_last` and `channels_first`

- Preprocessing (BCIC2a, SMR_BCI, OpenBMI)
- SVM
- DeepConvNet
- EEGNet
- SpectralSpatialCNN
- MIN2Net
- MIN2Net without decoder
- MIN2Net without triplet