Add hash_property
Add scenario for sorting by title
No output needed
Try item_property
Make it fail
Revert "Make it fail"

This reverts commit c89e7539b86a483a2f8b14dd766ad90da1eb9773.
Use item_property
Fix output
Simplify config
Resolve conflict
Resolve second conflict
Fruity variables
allow json files in _data dir
add tests for json data
document json support
dot json;
Merge pull request #2369 from jekyll/json-data
Update history to reflect merge of #2369 [ci skip]
Update CI to use Ruby 2.1.2
Merge pull request #2374 from albertogg/update-ruby