Mark all result methods in AbstractQuery as impure #197

Job	Run time
Platform test (7.4)	2m 58s
Platform test (8.0)	3m 13s
Platform test (8.1)	3m 10s
Platform test (8.2)	3m 13s
Platform test (8.3)	3m 30s
Platform test (8.4)	2m 49s
Platform test (8.1, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 33s
Platform test (8.2, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 37s
Platform test (8.3, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	3m 3s
Platform test (8.4, doctrine/orm:^3.0 doctrine/dbal:^4.0 carbonphp/carbon-doctrine-types:^3 gedmo...	2m 41s
	29m 47s

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