started some tests
Merge branch 'master' into 276_menu_link

* master: (32 commits)
  only fetch travis badge for master
  verified #276 with additional tests. close #276
  Support DateTime object as argument to "date" filter
  Added simple unit test to make sure that TimberQueryIterator is present in the default context
  Add Timber::query_posts() to the context by default in Timber::get_context()
  Made the $query param to Timber::query_posts optional again
  Removed unreachable return statement in Timber::query_posts
  more tests to ensure compatibility (for now, we'll break it in the future) #271
  added more tests, matched-up to WP coding standards
  removed tons of GUNK
  remove public keywords from deprecated functions
  passes preview test!
  removed very old url_to_path method. Complies with WP coding standards
  wrote test to verify that you can still get a post by the slug
  removed unneeded code based on presence of Query
  remove extra error log
  issues are resolved except for post previewing
  (almost) all tests passed....
  Implement getting posts from slug with hash and post type
  Restore unit test from 4ba7c09 now that get_posts returns an array
  ...
more tests for children; resolved issue for getting the originating object's data