Upgrade notes for SimpleSAMLphp 2.4

SimpleSAMLphp 2.4 is a minor new release which introduces a few new features. The following changes are relevant for installers and/or developers.

• Where a configuration has multiple hosted IdPs, metadata is now associated with the entityId. This means that endpoints such as SingleSignOnService values will be taken from the entityId block in saml20-idp-hosted.php. See ( https://github.com/simplesamlphp/simplesamlphp/pull/2270 ) for details.

• The statistics module has been removed from the release, because the Charts API it depends on has been discontinued by Google, rendering the module useless.