Merge pull request #2748 from jamescowens/fix_fraction_class_addition… #3049

Job	Run time
ARM [GOAL install] [buster]	6m 51s
Win32	8m 4s
Win64	11m 49s
i386 Linux [GOAL install] [focal]	7m 16s
x86_64 Linux [GOAL install] [GUI] [focal] [no depends]	16m 5s
x86_64 Linux [GOAL install] [GUI] [bionic] [no depends]	14m 50s
macOS 10.14 [GOAL deploy] [GUI] [no tests] [focal]	9m 47s
Lint	48s
macOS 12 native [GOAL install] [GUI] [no depends]	27m 7s
	1h 42m 37s

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