INDRA v1.15.2

Package structure

• Remove the top-level data folder from version control (not part of package)
• Make INDRA compatible with networkx 2.4 (which removed several deprecated
  features).

Input processors

• Refactoring of the BEL input API in indra.sources.bel.
  Access to Selventa corpora is now via https://github.com/cthoyt/selventa-knowledge.
• Multitude of improvements to the CWMS processor in indra.sources.cwms,
  including extracting migration events.
• Refactoring of INDRA DB REST API in indra.sources.indra_db_rest to use
  a class-based processor structure for all endpoints.
• Add Gilda grounding option to the ISI reader in indra.sources.isi.

Core assembly modules

• Normalization across equivalent and opposite concepts in indra.preassembler
  based on an ontology.
• Improved custom preassembly functions for location and time matching in
  indra.preassembler.custom_preassembly.
• Preliminary integration of a Gilda client with Grounding mapper in
  indra.preassembler.grounding_mapper.gilda.

Output assemblers

• Improved headings and grounding display in the HTML assembler in
  indra.assemblers.html.
• Generalize INDRA Net assembler to causal influences and associations in
  indra.assemblers.indranet.
• Make PySB assembler compatible with PySB 1.9 in indra.assemblers.pysb.

Resources

• Integrate new WorldModelers ontologies with INDRA in
  indra.preassembler.make_wm_ontologies.
• Updates to FamPlex and other grounding resources.