Improvements and bug fixes.

Updated

- ``SAClient.get_annotations_per_frame()`` Added interpolation of polygonal and polyline annotations.

Fixed

- ``SAClient.add_contributors_to_project()`` method.
- ``SAClient.run_prediction()`` method.

Removed

-  ``SAClient.create_project_from_metadata()`` method.
-  ``SAClient.get_project_image_count()`` method.