update Directory Reference

Files
	api.php
	The class core::update::api is defined here.
	checker.php
	Defines classes used for updates.
	checker_exception.php
	Defines classes used for updates.
	code_manager.php
	Provides core::update::code_manager class.
	info.php
	Defines classes used for updates.
	remote_info.php
	Provides core::update::remote_info class.
	validator.php
	Provides validation class to check the plugin ZIP contents.