added new "money" type for all databases
added new limit options for integers, dates, & money (maps to decimal on non-mssql db)
handy new methods mediumInteger(), smallInteger(), tinyInteger()

adds support for MSSQL: DATE, SMALLDATETIME, MONEY, SMALLMONEY, BIGINT, SMALLINT, TINYINT

adds support for mysql: BIGINT UNSIGNED, BIGINT, INT UNSIGNED, MEDIUMINT UNSIGNED, MEDIUMINT, SMALLINT UNSIGNED, SMALLINT, TINYINT UNSIGNED, TINYINT