v2.0.0-rc1

• Rewrite the core algorithm to use a native PHP generator, drop compability with PHP < 5.6 #43

Added

• New option custom_path to humanReadable() to use custom translation files #56
• New helpers methods #60
  • getOccurrencesBefore
  • getOccurrencesAfter
  • getNthOccurrencesBefore
  • getNthOccurrencesAfter
  • getNthOccurrencesFrom