Postgres event store with schema support

[ghettovoice]

Hello,
thank you for the awesome library!
I use pdo store with postgres and I want to create store tables in the custom DB schema.
Is it planned to add support of multi schemas event stores in PostrgesEventStore and Persistence strategies? Currently this is impossible due to quoting the whole $tableName variable.
Thanks!

[ghettovoice]

I need this feature in my current working project where we have separate schema for each module.
So I've done a pull request with changes to Pg related classes to add such feature.
Seems like all works as before, tests are passed. Let me know if you have questions about pull request.
Thank you for the great job!