Log Message:
Update to 0.31:

0.31 Thu Mar 30 05:28:20 PST 2006
	- more schema update stuff:
	- added Column::sql_alter_column
	- added Table::sql_alter_table
	- added DBSchema::sql_update_schema and DBSchema::update_schema

0.30 Thu Feb 16 16:43:01 PST 2006
	- "Too much uptime"
	- Remove buggy debugging from Column.pm
	- Remove removed TODO from MANIFEST

0.29 Thu Feb 16 13:54:42 PST 2006
	- Column::sql_add_column fix when adding primary keys to Pg 7.2.x
	- workaround for PAUSE parsing of DBIx::DBSchema::DBD::Pg version: move
	  DBD::Pg verison checking after $VERSION declaration, thanks Andreas!
	- kludge: allow scalar ref default to force quoting off, to add things
	  like functions and empty values as defaults
	- Move TODO file to DBSchema.pm and DBS/Column.pm BUGS sections

0.28 Wed Nov 30 09:46:47 PST 2005
        - Initial SQLite support from Jesse Vincent
	- fix typo in DBIx::DBSchema::DBD POD doc