message: fixed pipe character being removed when pasting
  When some text gets pasted into the editor, the pipe character ( | ) would be removed from the text.
  I think the regex that normalizes the whitespace uses the character set so it doesn't need the pipe to mean "match any character in the set"
diff: @@ -12,7 +12,7 @@ export const invalidCharacters = Array.from({ length: 11 }, (x, i) => {
  return String.fromCharCode(0x2000 + i);
  }).concat(['\u2028', '\u2029', '\u202f']);
  -const sanitizeRegex = new RegExp('[' + invalidCharacters.join('|') + ']', 'g');
  +const sanitizeRegex = new RegExp('[' + invalidCharacters.join('') + ']', 'g');
  export function normalizeWhitespace(line) {
  return line.replace(sanitizeRegex, ' ');
  