README update (#7) #27

Job	Run time
CI / Context	1s
CI / Generate matrix	18s
CI / Check governance	1s
CI / 8.1 prf-low mysql57 phpunit all	2m 7s
CI / 8.2 mariadb phpunit all	2m 0s
CI / 8.3 mysql80 phpunit all	1m 55s
CI / 8.3 mysql84 phpunit all	1m 54s
CI / 8.1 mysql57 phplinting	2m 0s
CI / Dispatch tag patch release	0s
	10m 16s

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