v8.1.0

Changes:

Test and export templateHelpers (#986)

Usage:

import templateHelpers from 'chordsheetjs';

const {
  isChordLyricsPair,
  lineHasContents,
  isTag,
  isComment,
  stripHTML,
  each,
  when,
  hasTextContents,
  lineClasses,
  paragraphClasses,
  evaluate,
  fontStyleTag,
} = templateHelpers;