Rewrite Article class.
Add abstract example for Article test.
Convenience method to find chemical mentions in a CAS that are also found in the seed pathway.
Allow a list of metabolites (excluding currency molecules) from a seed pathway.
Include the number of seed metabolites found in source document with each extract annotation.
Cleanup formatting.
Create generic Pathway class from old SeedPathway class.
Take into account other chemical entities in source papers when scoring relevance.
Fix metabolite indexing.
Prevent breaking out of reaction loop too early.
Check if indexes contain ID before retrieval.
Implement option to evaluate a single pathway.