message: Log in test support
diff: +const logger = require('heimdalljs-logger')('messengers');
  +
  +
  module.exports = class TestMessenger {
  static create() {
  return new this();
  @@ -7,6 +10,7 @@ module.exports = class TestMessenger {
  }
  send(message, params) {
  this.sentMessages.push({ message, params });
  + logger.info(JSON.stringify(message, null, 2));
  }
  static async sentMessages(env) {
  let schema = await env.lookup('hub:schema-cache').schemaForControllingBranch();
  