add some details.

All finished! :rocket:

A3Q5: finish :rocket:

A3Q4: finish :rocket:

A3Q3: finish :rocket:

security update

fix numpy compatibility problem and update requirements.txt(support conda)

A3Q2: LSTM finished :white_check_mark:

A3Q1 finish :white_check_mark:

A3Q1: almost finished :tada:

A2Q5: Pytorch finish

A2Q4:CNN finish

A2Q4:CNN finish

fix neural net a bug，Dropout finish

Batch\layer Normalization finish