Setup mutation testing #309

Job	Run time
Platform test (8.0)	33s
Platform test (7.4)	42s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 25s
Platform test (8.4, true)	4m 27s
Platform test (8.2)	2m 35s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 21s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 43s
Platform test (8.3)	3m 3s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	48s
Platform test (8.1)	44s
Platform test (8.4)	2m 41s
	23m 2s

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