* Added functions to Map
  * exists allows for checking for the existence of a key in the map
  * sync_keys allows for manually importing keys from the underlying Knowledge Base. This can be useful if other knowledge bases are updating the map across the network or if the knowledge base is being used directly by other user code sections.

git-svn-id: http://madara.googlecode.com/svn/trunk@1195 2850746a-f1c8-11dd-b507-8b4ecd5210be
* Updated version to 1.4.6

git-svn-id: http://madara.googlecode.com/svn/trunk@1196 2850746a-f1c8-11dd-b507-8b4ecd5210be