refactoring
added typed node property with implicit cast op.
changed node type configuration interface [WIP]
updated node system for new node conf. interface [WIP]
updated node tree serializer for new node conf. interface [WIP]
updated node resolver for new node conf. interface [WIP]
updated console app for new node conf. interface [WIP]
updated arithmetic nodes for new node conf. interface [WIP]
updated BRISK (opencv) nodes for new node conf. interface [WIP]
updated color conversion nodes for new node conf. interface [WIP]
updated features drawing nodes for new node conf. interface [WIP]
updated feature detector nodes for new node conf. interface [WIP]
updated image features nodes for new node conf. interface [WIP]
updated filter nodes for new node conf. interface [WIP]
updated FREAK nodes for new node conf. interface [WIP]
updated histogram-related nodes for new node conf. interface [WIP]
updated homography nodes for new node conf. interface [WIP]
updated keypoints-related nodes for new node conf. interface [WIP]
updated kSURF nodes for new node conf. interface [WIP]
updated matcher nodes for new node conf. interface [WIP]