TypeErrors in label_search.py

[Jongheon Kim]

Hello, thanks for great codebase!

in autoprompt/label_search.py, I found that there are some TypeErrors(missing arguments).

1. use_ctx is not denoted when loading dataset
2. when initializing utils.TriggerTemplatizer, 'config' argument is missing.

First one can be fixed as just add 'use_ctx=False' since label_search.py is only used for sentiment analysis and NLI tasks. (not for relation extraction)

Fixed in PR #31 .

Thank you again.