Revert "Revert "Merge branch 'dev' into 'release'""

e2e/auth/crypt.go

e2e/auth/crypt_test.go

e2e/auth/encryptDecrypt_test.go

e2e/auth/mac.go

e2e/auth/mac_test.go

e2e/encrypt.go

e2e/encrypt_test.go

e2e/singleUse/mac.go

e2e/singleUse/mac_test.go

fileTransfer/crypt.go

fileTransfer/crypt_test.go

fileTransfer/mac.go

fileTransfer/mac_test.go

group/crypt.go

group/mac.go

group/mac_test.go

hash/hash.go