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
CustomMember was extending the wrong class to be able to reference $this->owner.
Also, changed CustomMember to MyMemberExtension to remain consistent with the initial example.
This reverts commit 14b997eea3.
Its just not practical to use the Config API as it stands,
the add_extension() wrapper does more than just a Config->update().
Most use cases can be covered via YML, but any conditional
additions (e.g. in unit tests) can still benefit from the
add_extensions() shorthand.
