Misc improvements#1333

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le-horizon wants to merge 4 commits intopytorchfrom

misc_data_transformer

Commits on May 17, 2022

misc small improvements and debug messages for data transformer etc.
Le Horizon
committed
allow critic.last_bias_init_value to be configurable; various fixes and debug message improvements.
Le Horizon
committed

Commits on Jul 1, 2022

address comments
Le Horizon
committed

Commits on Jul 6, 2022

fix x t scalar input, need to expand to fit batch_size
Le Horizon
committed