Tweaking the first three parameters (R, G, B) allows you to get a different mix of colors into grey, but it does not allow you to make the result lighter or darker because their total is normalized. This is quite a common operation on greyscaled images though, so I added a fourth parameter: brightness. It defaults to 100% so that it does not have any effect when not used (making this backwards compatible). $brightness = 50 will make it darker, $brightness = 150 will overlight it.
Database abstraction broken up into controller, connector, query builder, and schema manager, each independently configurable via YAML / Injector
Creation of new DBQueryGenerator for database specific generation of SQL
Support for parameterised queries, move of code base to use these over escaped conditions
Refactor of SQLQuery into separate query classes for each of INSERT UPDATE DELETE and SELECT
Support for PDO
Installation process upgraded to use new ORM
SS_DatabaseException created to handle database errors, maintaining details of raw sql and parameter details for user code designed interested in that data.
Renamed DB static methods to conform correctly to naming conventions (e.g. DB::getConn -> DB::get_conn)
3.2 upgrade docs
Performance Optimisation and simplification of code to use more concise API
API Ability for database adapters to register extensions to ConfigureFromEnv.php
