fix (autoload.php) package prefix
feat (Config.php) add class to store configuration of client
fix (Config.php) autocommit constant name
refactor replace config strings with constants
docs (Database.php) remove redudant comments
refactor constant names
refactor exception messages and constructor
docs restyling and fixing phpdocs
fix constant name
refactor move connection parameters to Config
refactor rename methods that fetch field information
refactor rename constatnts to make options more consistent
fix (Config.php) constructor parameter
fix (Config.php) offset exists check