Merge branch 'release' into '2.0/singleusebindings'

Makefile

README.md

api/messenger/messenger.go

api/precan.go

auth/callbacks.go

auth/confirm.go

auth/interface.go

auth/params.go

auth/receivedConfirm.go

auth/receivedRequest.go

auth/state.go

auth/state_test.go

auth/store/sentRequestHandler.go

auth/utils_test.go

backup/backup.go

backup/backupRestore.go

backup/backup_test.go

backup/keyStorage.go

backup/keyStorage_test.go

bindings/README.md