PostgresDatabase no longer uses 'pmxtest' as the default user, but instead defaults the username to the database name.
3.0.1
=====
2: When searching heuristic paths, sort parsed version numbers numerically so that 10 is greater than 9.
3.0
===
Removed global variables and behavior on import:
- root - INITDB - PG_CTL - PSQL - POSTGRES
Instead, use ``PostgresFinder.find_root()``.
2.0.1
=====
1: Fix version detection on Postgres 10.0.
2.0
===
PostgresServer now creates all databases with a default locale of ``en_US.UTF-8``. Now, databases will be Unicode-capable by default. To restore the original behavior, deferring to the system locale, pass ``locale=None`` to ``initdb``.
1.6
===
Add ``.create`` convenience method to PostgresServer.