Extracting landmarks using Pyperplan

• Basic implementation of intersections between landmarks of different goals in a pandas dataframe.
• Can iterate through different planning problems and extract landmarks.
• Toy problem in experiments/raw/Problem1
• Final framework in Landmark Planning/pyperplan-master/landmarkextraction.py

To do:

• Store the data somewhere.
• Implement the idea of a candidate goal/real goal.
• Test on some larger datasets.
• Reorganisize folder structure and reliances so that code just needs pyperplan imported rather than directly extending from pyperplan codebase.

Issues:

• The PDDL parser does not seem to work with domains which use equality (=).

Domain file is from Pyperplan's logisitics benchmark.