Setup mutation testing #310

Job	Run time
Platform test (7.4)	2m 44s
Platform test (8.0)	2m 46s
Platform test (8.1)	2m 52s
Platform test (8.2)	2m 29s
Platform test (8.4, true, infection/infection)	4m 30s
Platform test (8.3)	3m 10s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 48s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 31s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 24s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 33s
Platform test (8.4)	2m 51s
	31m 38s

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