#7 - store object instead of 1 in pnodeToVnodeMap so we can later on store r/w state
#7 - preserve vnode properties when remapping vnodes
#7 return acl with getNode() request
#7 add optional data element to vnode
#7 add optional data element to vnode
#7 fix unit tests to check more thoroughly on remaps. Specifically ensure that both remapped pnodes contain the right vnodes
#7 add docs about remapping