Allows Erlang Digraphs (acyclic ones in particular) to be parsed and converted into other formats

Contains Typedocs and general functions for parsing and manipulating FDG nodes

Parses FDG AST into GraphML syntax, for exporting to tools like Gephi

Parses FDG AST into Graphviz (.dot) syntax, and allows for exporting to Various image formats using Graphviz