Updated travis (running on my fork) to check vs newer pythons
Updated travis to check vs newer Django versions, including 4.0
Needed to upgrade Postgres as Django 4 doesn't support the old Postgres 9.6
Fixed Django imports to work in older and new versions
Updated readme compatibility matrix.
provide django4 compatibility Co-authored-by: Frank DiRocco 160608+fdr2@users.noreply.github.com
Updated travis (running on my fork) to check vs newer pythons Updated travis to check vs newer Django versions, including 4.0 Needed to upgrade Postgres as Django 4 doesn't support the old Postgres 9.6 Fixed Django imports to work in older and new versions Updated readme compatibility matrix.