Schema Operations

`pgm.createSchema( schema_name, schema_options )`

Create a new schema - postgres docs

Arguments:

schema_name [string] - name of the new schema
schema_options [object] - options:
- ifNotExists [boolean] - adds IF NOT EXISTS clause
- authorization [string] - alternative user to own new schema

Reverse Operation: dropSchema

`pgm.dropSchema( schema_name, drop_options )`

Drop a schema - postgres docs

Arguments:

schema_name [string] - name of the schema to drop
drop_options [object] - options:
- ifExists [boolean] - drops schema only if it exists
- cascade [boolean] - drops also dependent objects

`pgm.renameSchema( old_schema_name, new_schema_name )`

Rename a schema - postgres docs

Arguments:

old_schema_name [string] - old name of the schema
new_schema_name [string] - new name of the schema