Making contracts `memory-safe` #391

Job	Run time
verify (verifyOwners.sh)	2m 47s
verify (verifySafe.sh)	4m 9s
verify (verifyModules.sh)	1m 46s
verify (verifyNativeTokenRefund.sh)	4m 39s
verify (verifySignatures.sh)	1m 26s
	14m 47s

Provide feedback