DDEX: Remove NpgsqlDataObjectSelector, use default one, no longer need customization
DDEX: Make copy/paste drag/drop work
Npgsql: Rework NpgsqlConnectionStringBuilder to be more consistent
Npgsql: Fix bug in NpgsqlMetaData.xml, wrong CompositeIdentifierSeparatorPattern
Npgsql: Fix GetSchema for tables to return TABLE only