Nesting payloads FTW
Elements that don't have a payload should be nil in .payloads
Tests for updated lucene index quoting
Forgot to implement drop_key_index
Support using Set as a way to express an OR condition in a property filter
Bump minor version
Add a method to edges to reverse their direction
Merge branch 'develop' of git://github.com/pangloss/pacer into index_methods

Conflicts:
	lib/pacer/graph/pacer_graph.rb

* lib/pacer/core/graph/path_route.rb: