Added
- Added some first unittests
Changed
- `RelaticsWebservices.get_result()` will now return an `ExportResult` object by default, making it similar to
`run_import()`.
Removed
- Removed usage of `InvalidOperationError` and `InvalidWorkspaceError` in favor of using `ExportResult` or
`ImportResult` object to convey the outcome of the request. Both object types have a builtin storage of errors. Both
will evaluate as Falsy when an error was received, otherwise Truthy.