CHANGELOG
=========

VDLx 1.18 -> 1.19
-----------------

o Made the attributes definitions@vdlns and definitions/derivation@name
  mandatory.

o Added restrictions to definitions/transformation@namespace,
  definitions/derivation@namespace, definitions/derivation@usesspace. 

o Added restrictions to definitions/transformation@version,
  definitions/derivation@version,
  definitions/derivation@minIncludeVersion and
  definitions/derivation@maxIncludeVersion

o Some schema location changes.