supervisor: update to latest stable

Signed-off-by: Jimmy Tang <jcftang@gmail.com>

Author: jcftang

pkgs/supervisor.yaml

@@ -5,5 +5,5 @@ dependencies:
   run: [meld3, superlance]
 
 sources:
- - url: https://pypi.python.org/packages/source/s/supervisor/supervisor-3.0.tar.gz
-   key: tar.gz:qkvmktcxmc3kj5gcrxncanyu4nrknc2k
+- key: tar.gz:4mwfi37i2ktoa6pmjam4jh6siu2nib22
+  url: http://pypi.python.org/packages/source/s/supervisor/supervisor-3.1.3.tar.gz