Remove sorting in the extract_attributes to follow 33a653bccbce9c2f4b1df4aa186cd3cd16a13a39 changes (Removes sorting in the schema_value_example)
Merge pull request #176 from co3k/fix-sorted-attribute

Remove sorting in the extract_attributes
bump json_schema

closes #171
loosen targetSchema restrictions for examples

schema example building is now more robust, so let it handle edge cases
v0.7.0
Check for unassigned variable.
Merge remote-tracking branch 'upstream/master'