Engine to work with PostgreSQL by default

Default for our Docker compose

changed milestone to %1.0-alpha2 — Precise Pheasant

added P2 label

added To Do label

changed milestone to %Aura 0.9

added Doing label and removed To Do label

closed

removed Doing label

mentioned in commit 0dc3aa77

mentioned in commit 5303466a

mentioned in issue #75 (closed)