refactor: improve `TimelineSelector` API (#234) #63

Job	Run time
rust-tests (ubuntu-22.04)	4m 15s
python-tests (ubuntu-22.04, 3.9)	1m 51s
integration-tests	4m 58s
python-tests (ubuntu-22.04, 3.12)	1m 53s
python-tests (macos-14, 3.12)	1m 44s
Publish coverage reports to codecov.io	7s
	14m 48s

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