Merge pull request #10 from iven/master

Add `LIKE` and `UNLIKE` constraint
Support patch-style app and group updates

Summary: Allow for patch-style updates by only sending assigned properties of an app or group

Test Plan: Perform some updates

Reviewers: merkkila

Reviewed By: merkkila

Subscribers: tberman, peter, justin, stephan, serdar

Differential Revision: http://phabricator.thefactory.com/D3687
add service_port argument
Merge pull request #11 from danielfrg/master

add service_port argument (Marathon 0.7.3)
Bump to 0.6.3
Add support for embedding tasks in get/list apps result