message: [M->I]: Preserve indentation in code
diff: @@ -341,7 +341,9 @@ export function markdownCodeToIrc(text: string): string|null {
  return null;
  }
  // Remove the first line (e.g. ```js) and the ``` at the end
  - trimmedText = trimmedText.substring(trimmedText.indexOf('\n'), trimmedText.length - 3).trim();
  + trimmedText = trimmedText.substring(trimmedText.indexOf('\n'), trimmedText.length - 3);
  + // Trim whitespaces but not indentation
  + trimmedText = trimmedText.replace(/^\s*?\n/, '').replace(/\s*$/, '');
  return trimmedText;
  }
  