0.5.56

• Includes some performance fixes on recent versions of Obsidian 1.3+ due to some API changes. Thanks @kometenstaub.
• Documentation cleanups and improvements by @mocsa, @protofarer, @seanlzx, and @somidad.
• Adds the new flat(array) method for flattening nested arrays, as well as parsing dates using arbitrary formats using
  date(text, "format"). Thanks @holroy!