Labkey

- domain.create() now iterates through its conditional formats and converts instances or lists of QueryFilter to their string format.
- domain.conditional_format() provides a wrapper for creating a conditional format--typically to be used in updating
- Added examples for domain.create, domain.conditional_format, and updating QC state.

- Added truncate_table function (29)

* Add isblank and isnonblank filter types (23)
* Fix issue with Query API overwriting query filters with the same field/comparison (20)
* Use pytest as the default test runner (24)

Thanks to AetherUnbound for these changes

- Add `__repr__` for `ServerContext` and `QueryFilter`. Thanks to AetherUnbound for this contribution.

- BREAKING CHANGE: in labkey.experiment ProtocolOutput has been renamed to RunItem
- Provide a default encoder for json.dumps to better handle datetime (14)

- Domain API, see labkey.domain
- Fix for error response handling 12. Thanks to thusharaw for this contribution.