Fixed a bug in 3D SpaceMap about check if neighbour location accessable.
Fixed a bug in pathfinder about checkNeighbourAccessable
Fixed bugs for selecting adjacent accessiable neighbour locations.
Fixing loop precondition dependency problem.
Solved precondition loop dependency problem.
Fixed a bug for checking loop denpendency.
Fixed a bug in 3D spacemap for finding neighbour BlockeEntities.
Modified the data struct of ParamCandidate
Fixed sorting the order for groups of non-numeric variable value candidates according to calculate precond and effect fitness.
Merge https://github.com/opencog/opencog into planner
Merge pull request #407 from shujingke/planner

Finished Planner debug.
Add AtomSpacePublisherModule network AtomSpace event publisher using ZeroMQ and JSON for add, remove, tvchanged, avchanged events - preliminary version
Working on TruthValue, incoming and outgoing set
Add temporary .conf file for testing
Added outgoing and incoming sets
Add TruthValue property tree
Make the JSON atom object format match the format used in the REST API
Improve teardown. Add outline for unit tests.
Remove duplicate file
Add unit tests