message: Remove traces from stored deltas.
diff: import * as assert from "assert";
  import { EventEmitter } from "events";
  +import * as _ from "lodash";
  // tslint:disable-next-line:no-var-requires
  const now = require("performance-now");
  import * as winston from "winston";
  @@ -275,16 +276,7 @@ export class ScriptoriumLambda implements IPartitionLambda {
  });
  }
  - // Batch send to MongoDB
  - this.mongoManager.add(
  - {
  - documentId: value.documentId,
  - tenantId: value.tenantId,
  - },
  - value,
  - message.offset);
  -
  - // And to Socket.IO
  + // Send to Socket.IO
  const target: IoTarget = {
  documentId: value.documentId,
  event: "op",
  @@ -292,6 +284,18 @@ export class ScriptoriumLambda implements IPartitionLambda {
  topic: `${value.tenantId}/${value.documentId}`,
  };
  this.ioManager.add(target, value.operation, message.offset);
  +
  + const clonedValue = _.cloneDeep(value);
  + clonedValue.operation.traces = [];
  +
  + // Batch send to MongoDB
  + this.mongoManager.add(
  + {
  + documentId: clonedValue.documentId,
  + tenantId: clonedValue.tenantId,
  + },
  + clonedValue,
  + message.offset);
  } else if (baseMessage.type === core.NackOperationType) {
  const value = baseMessage as core.INackMessage;
  