tree e9b83bbeab559c1e716087d7bc74fb858de569cb
parent 6fb8461c1ab08e5570db0bb4da3881042917cac2
author Brad Bishop <bradleyb@us.ibm.com> 1446559972 -0500
committer Brad Bishop <bradleyb@us.ibm.com> 1446560454 -0500

Add PathTree to mapper library

PathTree is a somewhat generic structure for associating
data with a path, internally managed as a tree.  It emulates
built in python containers and supports iteration.