Making contracts `memory-safe` #366

Job	Run time
verify (verifyOwners.sh)	9m 29s
verify (verifySafe.sh)	3m 3s
verify (verifyModules.sh)	15m 50s
verify (verifyNativeTokenRefund.sh)	2m 43s
verify (verifySignatures.sh)	3m 26s
	34m 31s

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