Tests

Test: Narrow index variable typing #419

Job	Run time
Test mypyc suite with 32-bit Python	7m 16s
Test suite with py38-ubuntu, mypyc-compiled	17m 54s
Test suite with py38-windows-64	20m 12s
Test suite with py39-ubuntu	16m 25s
Test suite with py310-ubuntu	16m 18s
Test suite with py311-ubuntu, mypyc-compiled	15m 51s
Test suite with py312-ubuntu, mypyc-compiled	18m 1s
Test suite with py313-ubuntu, mypyc-compiled	18m 31s
mypyc runtime tests with py39-macos	4m 50s
Type check our own code (py38-ubuntu)	1m 59s
Type check our own code (py38-windows-64)	2m 20s
Formatting and code style with Black + ruff	34s
	2h 20m 11s

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