Tests

enum and non-nominal narrowing tech #672

Job	Run time
Test mypyc suite with 32-bit Python	18s
Test suite with py310-ubuntu, mypyc-compiled	8s
mypyc runtime tests with py313-macos	10s
Parallel tests with py314-ubuntu, mypyc-compiled	8s
Test suite with py314-windows-64	13s
Test suite with py312-ubuntu	9s
Test suite with py314t-ubuntu, mypyc-compiled	9s
Test suite with py311-ubuntu	8s
Test suite with py313-ubuntu, mypyc-compiled	9s
Test suite with py314-ubuntu, mypyc-compiled	8s
Type check our own code (py310-ubuntu)	8s
mypyc runtime tests with py310-ubuntu	8s
Parallel tests with py314-ubuntu, interpreted	8s
Parallel tests with py314-windows-64, interpreted	8s
Formatting and code style with Black + ruff	8s
Type check our own code (py310-windows-64)	13s
	2m 33s

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