Fix filters with not

[michael-dean-haynie]

The Objection and Sequelize packages are throwing errors when they receive IBM-style filters using not().

Steps to Reproduce: Easiest way to demonstrate this is by using the examples provided in the git repository.

Postman example for Objection

Postman example for Sequelize

Acceptance Criteria:

• The objection example should be able to handle querystring filters including the IBM-style not() operator.
• The sequelize example should be able to handle querystring filters including the IBM-style not() operator.
• Once resolved, we should remove any disclaimers about this bug from the @bitovi/objection-querystring-parser readme.

References:

• not() operator example docs

[michael-dean-haynie]

The @bitovi/objection-querystring-parser part of this issue is BLOCKED by #35