A new branch supports Tensorflow 2

fix the problem of nan gradient for zero vector input in Length layer (#83)

modified the plot_log function to have a consistent behaviour. data columns are now accessed by the column names; this does not assume the first column is epoch as before (#70)

Add google drive link for pretrained weights file

Added get_config functions for saving model. (#59)

remove gradient_stop

fix command comments (#40)

fix #37

fix #33

fix usage

subtitle

Add latent code manipulation

reorganise arguments

add pytorch link

alternative implementation for Masking