Multiple schema support or tricks

## I'm submitting a...

- [ ] Bug report
- [ ] Feature request
- [x] Question

## Current behavior

Good morning

Quick question.
Is there a way to manipulate tables other than the default schema.

for example I would like to create a table in several schemas

`
db.createTable('OTHER_SCHEMA.table', {
id: { type: 'int', primaryKey: true },
name: 'string'
});
`

Thanks !

## Environment

db-migrate version: 0.11.13

db-migrate-pg with versions: 1.3.0