v0.4.5

• Added some missing type mappings (int, float and float8)
• Use the same source for building the ckan-source-from-url operator.
• Data sent by this operators now has metadata with server URL and resource ID.

v0.4.4

• Fix problem requesting data. The correct name for the limit_rows parameter
  is limit. Newer versions of CKAN complain using a Validation Error
  exception when using the limit_rows parameter. This version fixes this bug.
• Fix Row limit preference description.