Revert type hints on abstract container for now.

This is our only abstract class in the compat suite and we expect
people to implement this. Adding a type hint breaks existing
implementations. So it's not really good to do this in a patch
release.

src/SAML2/Compat/AbstractContainer.php

@@ -37,7 +37,7 @@ abstract public function debugMessage($message, $type);
  * @param array $data
  * @return void
  */
- abstract public function redirect($url, array $data = []);
+ abstract public function redirect($url, $data = []);
 
  /**
  * Trigger the user to perform a POST to the given URL with the given data.
@@ -46,5 +46,5 @@ abstract public function redirect($url, array $data = []);
  * @param array $data
  * @return void
  */
- abstract public function postRedirect($url, array $data = []);
+ abstract public function postRedirect($url, $data = []);
 }