Support for boolean searches

The queries that we accept from users should include boolean search terms such as AND or OR. For example, if I want to search a recent controversial decision by an airline, I might search "delta AND passenger". Find out whether the Twitter API supports this type of query, or find whether an additional library could parse the terms as such.

Trace how user queries are accepted and sent to Twitter, then check whether the Twitter API supports boolean terms such as AND and OR. If it does not, evaluate a Python parser for these terms; done means the supported approach is identified and the expected handling of the example query is documented or implemented.

Written by the indexing model from the issue text.