1.5.7
  * added Basque language
  * added Brazilian language
  * added Croatian language
  * added Finnish language
  * added Turkish language

1.5.6
  * fixed winter level 13 getting stuck
  * added Italian language
  * added Swedish language

1.5.5
  * wiki page on the website created, describing how to create new levels
  * 12 more winter levels added
  * display for the percentage of incremental achievements added
  * added the time to the display on the screen
