v0.2.1

• Fixes the md5 buffer being overwritten.
• Allows for 0 to be used as a valid system/region value.
• Changes that require attention:
  • region and system now must be present on the query object and allows null.
  • art is no longer undefined, it is replaced with null.
  • These changes help enforce that the shapes of the objects are more consistent, for JS engine optimization. It is highly recommended that you order your query object keys the same way each time.