new version interfaces
extend interfaces, driver-independent logic

+ extend and connect IConnection, ICommand and IQuery
+ driver-independent logic (implementing IConnection, ICommand & IQuery) for Connection, Command & Query

performance test
+ NameCastVsHardCoded.php - no serious overhead noticed - so we will further implement Factory pattern-like behaviors
finalize interfaces + mysql connection,query & queryResult finished (untested)

UNTESTED

PDO middle abstraction layer introduced:
 + abstract Connection
 + Query (final) - used in MySQL as is
 + QueryResult (final) extends PDOStatement - used in MySQL as is

improvements, extensions & clarifications in interfaces
 + commented well (in documentation purposes)

remove QueryResult - no generic one yet possible - maybe later
renamed asql\Db namespace to asql\DBAL
transactions (abstractions + PDO)
CommandBuilder interface clarification
version 2.0-pre-alpha to master