v1.13.0

This release adds support for new transfer types in the traffic generator. In particular, tgen now supports asymmetric bidirectional transfers and can be configured to generate traffic (transfers and packet streams) according to markov models (in graphml format).

This release also updates the topology code that is used to represent paths between nodes. The topology format changed slightly; the most significant change is that the 'asn' attribute is no longer valid. We also added additional topology validation checks and more helpful validation error message, and fixed some bugs in the shortest path computation and path cache code.

This is a pre-release and as such, bugs may be present in the new code.