Merge pull request #86 from ConvLab/Merge_Trippy

.gitignore

convlab/dialog_agent/agent.py

convlab/dialog_agent/env.py

convlab/dst/setsumbt/do/nbt.py

convlab/dst/setsumbt/tracker.py

convlab/dst/trippy/README.md

convlab/dst/trippy/__init__.py

convlab/dst/trippy/dataset_interfacer.py

convlab/dst/trippy/modeling_dst.py

convlab/dst/trippy/tracker.py

convlab/evaluator/multiwoz_eval.py

...lab/nlg/template/multiwoz/manual_system_template_nlg.json

convlab/nlg/template/multiwoz/nlg.py

convlab/nlu/jointBERT/multiwoz/nlu.py

...ERT/unified_datasets/configs/multiwoz21_sys_context3.json

convlab/policy/lava/README.md

convlab/policy/lava/multiwoz/latent_dialog/__init__.py

convlab/policy/lava/multiwoz/latent_dialog/agent_task.py

convlab/policy/lava/multiwoz/latent_dialog/augpt_utils.py

...b/policy/lava/multiwoz/latent_dialog/base_data_loaders.py