Update operations

[zhiltsov-max]

Summary

• Fixed Not all builtin source format are displayed in help message for import command #332
• Dataset remembers export options when is not bound
• Added more typed errors for Dataset, added default error messages
  • class incompatibility in simple merge
  • unknown format, no matching formats and multiple matching formats
  • dataset not found
• Fixed nms function
• Allowed class instances in is_member_redefined
• Fixed some type annotations

How to test

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT