* [DEP] Replaced submodule plRdf-Dev with plTabular.
* [DH_COMMUNICATION,NEW] Added edge_value/[2,4]. (Baudouin Duthoit)
* [DH_LOD_WALK_RANDOM,SC] Relocated from DH_NAVIGATION.
* [DH_LOD_WALK_SUPERVISED,SC] Relocated from DH_NAVIGATION.
* [DH_LOD_WALK_SUPERVISED,EXT] Optimized making a weighted random choice.
* [DH_NAVIGATION,DOC] Documented predicates.
* [LOD_STEP,SC] Relocated from DH_NAVIGATION. This is no longer DH-specific.
merge