Made the dicts being serialized ordered.

[KOLANICH]

Fixes #2161

Description of the changes being introduced by the pull request:

• Sort the dicts being serialized by their keys to enforce the same ordering all the time.
• Use OrderedDict type. I know that just dict is also ordered in modern versions of Python, but OrderedDict is more future-proof.

Please verify and check that the pull request fulfills the following
requirements:

• The code follows the Code Style Guidelines
• Tests have been added for the bug fix or new feature - not needed
• Docs have been added for the bug fix or new feature - not needed

[coveralls]

Pull Request Test Coverage Report for Build 3385835271

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 6 of 6 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.01%) to 98.175%

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Totals
Change from base Build 3385214379:	-0.01%
Covered Lines:	1164
Relevant Lines:	1177

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💛 - Coveralls

[jku]

closing as #2161 was closed

When this was designed sorting was intentionally left to the serializer. Change of behaviour now is not worth the small risk when the benefit is also so small: serializers are supposed to choose their serialization format, this includes potentially sorting dicts.