Add new filters: include incoming sets, include outgoing sets, TruthValue minimums. Simplify the filter processing and query string generation code. Sort type names. Upgraded to support OpenCog REST API v1.1.
Add suggestions to TODO: Directed edges, tree-like layout. Update with recent additions.
Put handle parameter into separate Search pane as suggested by @TScottJ
Merge pull request #3 from cosmoharrigan/improved-filters

Add new filters: include incoming sets, include outgoing sets, TruthValue...