Cut version 0.1.6

Including Python and CoffeeScript linting. Also improved the
`release_note` lint to strip blank notes rather than just warning.

Change-Id: I54058fa20bace0d408163a7ad884e8848fe15d28
Reviewed-on: https://gerrit.causes.com/23271
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Shane da Silva <shane@causes.com>