tests

Backend rewrite for v1.0 #423

Job	Run time
Code Quality	46s
Build distribution and test installation	1m 14s
Tests (ubuntu-latest, Python 3.8)	53s
Tests (ubuntu-latest, Python 3.9)	47s
Docs preview	56s
Tests (ubuntu-latest, Python 3.10)	54s
Tests (ubuntu-latest, Python 3.11)	1m 0s
Tests (ubuntu-latest, Python 3.12)	48s
Tests (macos-latest, Python 3.8)	2m 44s
Tests (macos-latest, Python 3.9)	2m 43s
Tests (macos-latest, Python 3.10)	5m 14s
Tests (macos-latest, Python 3.11)	2m 50s
Tests (macos-latest, Python 3.12)	2m 14s
Notify failed build	0s
	23m 3s

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