Various modifications. Allowing the Subject-XPath-Data-Search field to be empty and when it is empty, not storing an array of pre-edit PIDs. Adding a catch-all check for inward RDFs on purge. Putting t-function call around arguments to drupal_set_message.
Merge pull request #6 from NBywell/6.x

Various modifications. Allowing the Subject-XPath-Data-Search field to b...