Release version 0.7.

- Compatibility with newer MediaWiki versions.
 - MediaWiki >= 1.27 wants users to be created in a different order.
 - MediaWiki >= 1.25 requires that NULL passwords are set with a different function.
- Improve synchronising session between MediaWiki and SimpleSamlPhp.
- Rudimentary support for $wgWhitelistRead.

SimpleSamlAuth.php

@@ -30,7 +30,7 @@
 $GLOBALS['wgExtensionCredits']['other'][] = array(
 	'path' => __FILE__,
 	'name' => 'SimpleSamlAuth',
-	'version' => 'GIT-master',
+	'version' => '0.7',
 	'author' => 'Jørn Åne',
 	'url' => 'https://www.mediawiki.org/wiki/Extension:SimpleSamlAuth',
 	'license-name' => 'LGPL-3.0+',