Merge branch 'main' of github.com:NSoiffer/MathCATForPython #251

Job	Run time
l10n	6s
Build linux pyd file (64-bit intel)	1m 26s
Build 32 bit windows pyd file	5m 23s
Build 64 bit windows pyd file	2m 37s
zip up the rules directory	48s
build-addon	27s
Pre Release	19s
	11m 6s

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