Use deduce <2

[vmenger]

Hi, I just released deduce 2.0.0 which has breaking changes, also breaking deidentify it seems. For now I fixed it by pinning <2 in the requirements.

Is this project still actively maintained? Deduce 2.0 supports structured annotations now, we could incorporate it here and probably deprecate some of the wrapper code. I intend to make more changes to the rule-based logic in future releases as well. Lemme know! -Vincent