1.4.27

improvement

1. Add graph_from_dot_data_one function. #7

1.4.23

improvement

1. Add the quotes_property function. #6
2. In the class Graph, add the make_link method. #5
3. In the class Graph, add the make_node method. #4

1.4.6

improvement

1. Now add_node supports str type for pydot.
2. Add add_edge_str method for pydot.