Todo

Methods summary
Peg\Custom\Localization\Language	`GetSystemLangauge()`	Implement also for microsoft windows.
Peg\Lib\Definitions\Symbols	`GetPHPStandardType()`	Add hook\|signal so a plugin can modify the returned type.
Peg\Lib\Definitions\Symbols	`GetStandardType()`	Add hook\|signal so a plugin can modify the returned type.
Peg\Lib\Definitions\Symbols	`HasClass()`	Resolve classes that are part of the name.
Peg\Lib\Definitions\Symbols	`HasTypeDef()`	Resolve classes that are part of the name.
Peg\Lib\Generator\ZendPHP	`GetRegisterConstantTemplate()`	Improve this to handle various types.