TCRD v6.4.0
===================
This README describes changes from v6.1.0.

DrugCentral Indication diseases
===============================
Rows in the disease table with dtype 'DrugCentral Indication' did not
have DOIDs in did column (where available). This has been fixed.

STRINGDB ppi scores
===================
Rows in the ppi table with ppitype 'STRINGDB' did not have scores. This
has been fixed.

Drug Target Ontology
====================
The dto table has been populated with the term hierarchy from the latest
version of DTO (corresponding to the IDs and classifications previously
in TCRD v6).