------------------
- Added :class:`~pgcom.listener.Listener` class
- Added ``fix_schema`` decorator
- Added :func:`~pgcom.commuter.Commuter.select_one` method
- Added ``where`` argument to :func:`~pgcom.commuter.Commuter.resolve_foreign_conflicts` method
- Added ``where`` argument to :func:`~pgcom.commuter.Commuter.copy_from` method
- Added :func:`~pgcom.commuter.Commuter._table_columns` method
- Added :func:`~pgcom.commuter.Commuter._primary_key` method
- Added :func:`~pgcom.commuter.Commuter._foreign_key` method
- Moved sql queries to queries.py
- Deprecated ``f_key``, ``filter_col`` arguments of :func:`~pgcom.commuter.Commuter.resolve_foreign_conflicts` method
- Deprecated ``p_key``, ``filter_col`` argument of :func:`~pgcom.commuter.Commuter.resolve_primary_conflicts` method
- Deprecated ``return_scalar`` argument of :func:`~pgcom.commuter.Commuter.select` method
- Deprecated :func:`~pgcom.commuter.Commuter.get_columns` method