BoundaryProcessor done (prob and weighting not yet...)
move get Vertex from CacheManager & set OptsExector parameters
CacheManager (only update not finished)
CacheManager done
start to re-implement the knn search algo
knnsearch v1 framework implementation(not finished yet)
update boundary processor's bug
add TargetNode(tree structure to record target boundary)
add targetTree into BoundaryProcessor
implement walker (update edge weight by counting) not finished yet
add weightingfunction implementation(walker have to take care of it)
modify all linkedlist to arraylist
boundary and walker's path weight update implementation(done, but need
check&test)
Merge branch 'Develop'