By default, object support is disabled, and instead of throwing an
exception when an object is handled, null is returned.
If you do need object support, enable it via:
Yaml::dump($data, false, true);
If you want an exception to be thrown in case an invalid type is handled
(a PHP resource or a PHP object), pass true as the second argument:
Yaml::dump($data, true, true);
The same can be done when parsing:
Yaml::parse($data, 2, false, true);
encoding is detected using the `mb_detect_encoding()`-function
in strict-mode. Checking is done before the parsing starts.
Without this patch, the calls to `preg_replace()` using the
'u'-modifier would cause the non-utf8-string being processed
to be empty when parsing starts which makes the parsing return
no result.
