7 * added BufferingLogger for errors that happen before a proper logger is configured
8 * allow throwing from `__toString()` with `return trigger_error($e, E_USER_ERROR);`
9 * deprecate ExceptionHandler::createResponse
14 * added deprecations checking for parent interfaces/classes to DebugClassLoader
15 * added ZTS support to symfony_debug extension
16 * added symfony_debug_backtrace() to symfony_debug extension
17 to track the backtrace of fatal errors
22 * generalized ErrorHandler and ExceptionHandler,
23 with some new methods and others deprecated
24 * enhanced error messages for uncaught exceptions
29 * added ExceptionHandler::setHandler()
30 * added UndefinedMethodFatalErrorHandler
31 * deprecated DummyException
36 * added a DebugClassLoader able to wrap any autoloader providing a findFile method
37 * improved error messages for not found classes and functions