Update from superspray

tokenizer_config.json

@@ -1 +1 @@
-{"unk_token": "[UNK]", "sep_token": "[SEP]", "pad_token": "[PAD]", "cls_token": "[CLS]", "mask_token": "[MASK]", "model_max_length": 512, "special_tokens_map_file": "/root/.cache/torch/transformers/fd0c61d4c96b13e6a516155554dfe01128f36675252a321c5ed0b889c88ffe6f.275045728fbf41c11d3dae08b8742c054377e18d92cc7b72b6351152a99b64e4", "tokenizer_file": null, "name_or_path": "/content/electra_large_512"}
+{"do_lower_case": true, "model_max_length": 512}