Semantic type diffing support #10

Job	Run time
Security Audit	5m 5s
Test Suite (ubuntu-latest, stable)	21s
Test Suite (macos-latest, stable)	26s
Test Suite (ubuntu-latest, beta)	31s
Test Suite (windows-latest, stable)	30s
Test Suite (windows-latest, beta)	32s
Test Suite (macos-latest, beta)	28s
Build Release	0s
	7m 53s

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