Merge pull request planetlabs#1085 from planetlabs/steve/fix-packages

add planet.sync to packages

Author: stephenhillier

setup.cfg

@@ -1,5 +1,5 @@
 [options]
-packages = planet, planet.cli, planet.clients, planet.data
+packages = planet, planet.cli, planet.clients, planet.data, planet.sync
 
 [options.packages.find]
 exclude = examples, tests
@@ -25,4 +25,4 @@ based_on_style = pep8
 split_all_top_level_comma_separated_values=true
 
 [flake8]
-ignore = E121,E126,E501,W50
+ignore = E121,E126,E501,W50