Task List * [New Feature] A brand new configuration system based on [OmegaConf](https://omegaconf.readthedocs.io/en/2.1_branch/). * [Feature] Upgrade ``stanford CoreNLP`` to [Stanza](https://stanfordnlp.github.io/stanza/). * [Feature] Improve the dataset custermize experiments. * [Feature] Add relational GNN support.