2.0.0

Breaking changes

• Term and MultiTerm do not accept empty language codes any more.
• Removed cloning from the following methods:
  • GroupableCollection.toArray and List.toArray
  • Group.getItemContainer and setItemContainer
• Removed propertyId parameter from Claim.getQualifiers.
• SnakList.getFilteredSnakList can not be called with null any more.

Other changes

• Fixed possible performance issues due to cloning in Group.equals and the List, Mapand Set constructors.