DBSteward 1.3.8 Changelog

* Composer support - project inclusion and installation as global binary
* DBSteward now reports it's version in the CLI help text
* DTD validation improvements for partial definitions and extracted definitions
* pgsql8 --dbport is now honored
* selective identifier quoting with --quoteillegalnames flag
* require slonySetId with --requireslonysetid flag
* Duplicate sequence definiton fix for certain pgsql8 serial structure extractions
* Improve the slonyID summary text
* Remove extraneous DDL when diffing MySQL tables for changed column attributes
* Fix for duplicate index creation during pgsql8 diff