First shot at switching to database revision numbers separate from release version number. There are probably bugs, especially related to migration.
-- Enano CMS
-- Upgrade schema: 1.1.2 - 1.1.3
-- Storing obscenely huge integers as strings since that's how php processes them.
CREATE TABLE {{TABLE_PREFIX}}diffiehellman (
key_id SERIAL,
private_key text,
public_key text,
PRIMARY KEY ( key_id )
);
ALTER TABLE {{TABLE_PREFIX}}themes DROP group_policy, ADD COLUMN group_policy varchar(9) NOT NULL DEFAULT 'allow_all', ADD CHECK ( group_policy IN ('allow_all', 'whitelist', 'blacklist') );
ALTER TABLE {{TABLE_PREFIX}}session_keys ALTER COLUMN source_ip TYPE varchar(39),
ADD CHECK ( source_ip IS NOT NULL ),
ALTER COLUMN source_ip SET DEFAULT '127.0.0.1';