TCRD v6.7.0
Release Date: 20200706
======================
This README describes changes from v6.6.1.

DTO
===
The format of the dto.parent_id column was updated to have semi-colons
instead of underscores (ie. DTO_##### -> DTO:#####)

Disease table
=============
The disease.pvalue column was changed from varchar to numeric. This
affects only disease rows from Expression Atlas.

Phipster
========
Created new tables virus, viral_protein, viral_ppi and populated with
data received from Phipster group.