add support for word overrides in sentiment node
Add onadd node edit hook
Add mustache template support to the HTTP Request url
Add drop-intermediate option to Delay rate node
Merge pull request #187 from monteslu/sentiment

Add support for word overrides feature in sentiment node
Handle null debug messages
Fixes #200
Single-click on debug message reveals node
Closes #192
Allow use of arrow keys to move selected node
Closes #176
Remove deprecated nodes

As announced here https://groups.google.com/forum/#!topic/node-red/-2nG6nKaxFI
Bump 0.7.0
Add Grunt-cli dependency and fix Travis
Make Template node help clearer
Clear MQTT Connection watchdog on error
Fix HTTTP Request url template
Bump 0.7.1
Tidy up REST interface

 - Ensure application/json where appropriate
 - Use jquery api rather than d3
Fix library ui
Fix MQTT client reconnect logic
MQTT Client - missing null check
Handle port-in-use error on start-up