Merge remote-tracking branch 'origin/restructure' into restructure

api/client.go

e2e/manager.go

e2e/params.go

e2e/parse/partition.go

e2e/processor.go

e2e/ratchet/partner/session/cypher.go

e2e/ratchet/store.go

e2e/rekey/confirm.go

e2e/rekey/confirm_test.go

e2e/rekey/exchange.go

e2e/rekey/exchange_test.go

e2e/rekey/generate.sh

e2e/rekey/rekey.go

e2e/rekey/rekey_test.go

e2e/rekey/trigger.go

e2e/rekey/trigger_test.go

e2e/rekey/utils_test.go

e2e/rekey/xchange.pb.go

e2e/rekey/xchange.proto

e2e/sendE2E.go