[Feature request] pg8000 support
Is it something not considered as a high priority at the moment?

I've also seen people trying to implement this, e.g. [here](https://www.quora.com/Is-it-possible-to-swap-in-a-pg8000-backend-for-psycopg2-when-using-Peewee). You can implement it by doing something like the above code snippet.

```python
class PostgresqlDatabasePG8000(PostgresqlDatabase):
    ...
``` Yeah, but is there any chance it could get official support in peewee in the future?
It'd be nice to have one pure-Python PostgreSQL driver supported to minimize amount of dependencies installed on the system.

I think [pg8000](https://github.com/mfenniak/pg8000) is a great candidate.