Knackpy

Addresses formatting oddities with equation fields. For equation fields (date or numeric), `Record.format()` will now return the value that Knack renders in the UI.

This is a breaking change. If you're using this library to format equation fields, test before you upgrade. - [109](https://github.com/cityofaustin/knackpy/issues/109)

- Fixes unexpected behavior when using `Record.format` - 105

- Add failsafe to prevent infinite record fetch loop (91)
- Follow Pythonic logging conventions

Modifies default formatter to convert lists into strings

Actually implement support for `max_attempts` and `timeout` args in `knackpy.api.record` and `api.get_metadata`

- Replace `warnings.warn` with `logging.debug`