Semantic type diffing support #9

Job	Run time
Security Audit	5m 10s
Test Suite (windows-latest, stable)	32s
Test Suite (macos-latest, stable)	25s
Test Suite (windows-latest, beta)	34s
Test Suite (macos-latest, beta)	31s
Test Suite (ubuntu-latest, stable)	26s
Test Suite (ubuntu-latest, beta)	36s
Build Release	0s
	8m 14s

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