Add support for edge styles, and use it for edge weight
tree317fbde1d962e5fcb1286c2de9231432761cbcd6
-rw-r--r-- 805 MANIFEST
-rw-r--r-- 312 META.yml
-rw-r--r-- 318 Makefile.PL
-rw-r--r-- 10136 NEWS
-rw-r--r-- 782 README
drwxr-xr-x - doc
drwxr-xr-x - examples
-rw-r--r-- 10191 graph-includes
drwxr-xr-x - lib