Improve and document serialization

[dyve]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 21316345203

Details

• 120 of 139 (86.33%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.6%) to 95.152%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
src/euring/record.py	61	62	98.39%
src/euring/utils.py	4	6	66.67%
src/euring/field_schema.py	46	62	74.19%

Totals
Change from base Build 21312960902:	-0.6%
Covered Lines:	1578
Relevant Lines:	1667

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💛 - Coveralls