Add interner lifetime and improve documentation #191

Job	Run time
Audit	55s
Coverage	3m 27s
Build (ubuntu-latest)	31s
Clippy	18s
Build (windows-latest)	27s
Documentation	39s
Formatting	16s
Build (macos-latest)	19s
Miri	1m 21s
Outdated	12s
Test (ubuntu-latest)	53s
Test Memory Consumption (ubuntu-latest)	43s
Test (windows-latest)	2m 17s
Test Memory Consumption (windows-latest)	2m 17s
Test (macos-latest)	40s
Test Memory Consumption (macos-latest)	40s
	15m 55s

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