message: unbreak switching from draft to slate
diff: @@ -74,7 +74,7 @@ class HistoryItem {
  return this.value;
  }
  }
  - log.error("unknown format -> outputFormat conversion");
  + console.error("unknown format -> outputFormat conversion");
  return this.value;
  }
  }
  @@ -91,10 +91,15 @@ export default class ComposerHistoryManager {
  // TODO: Performance issues?
  let item;
  for (; item = sessionStorage.getItem(`${this.prefix}[${this.currentIndex}]`); this.currentIndex++) {
  + try {
  this.history.push(
  HistoryItem.fromJSON(JSON.parse(item))
  );
  }
  + catch (e) {
  + console.warn("Throwing away unserialisable history", e);
  + }
  + }
  this.lastIndex = this.currentIndex;
  }
  