v0.1.2

v0.1.2 Beta release

1. Fixes issue with empty graph throwing an error in Text output
2. Changed behavior of "search'
   a) if there are no exiting graphs, distance-based graphs are first created
   b) drift and annealing only operate on current best graphs
   PhyGraphUserManual.pdf
   Tutorials.tar.gz

Full Changelog: V0.1.2...v0.1.2