* Remove deprecated classes

* Remove support for certificate fingerprints

* Remove many deprecated methods and pieces of code

* Remove SAML1.1/Shib1.3 support

* Remove many superfluous annotations

* Update unit test to work with new PHPunit

Closes #1268 
Closes #1020 
Closes #431 
Closes #167 
Closes #151 

* Raise minimum PHP version to 7.0

* Remove tests pre-PHP 7.2

* Upgrade dev dependencies

* Ignore tests for deprecated class

* Add typehints; not touching public API

* Remove none-array replacements-param; old behaviour from pre-1.4 release

* Psalm fixes

* Add upgrade notes

* PSR-12

PSR-12 compliancy

This reverts commit 6bcea51e.

* Allow list of entity ids to be loaded to better support idpList

Certain metadata sources, like mdq, were don't support loading all metadata which
prevented them from being used with idplist. This change adds support for allowing
metadata sources to load a list of entities, allowing MDQ to be used for idp list.

Start migrating to SAML2 getters/setters

A PHPUnit listener unsets SSP environmental variables and attempts
to restore globals.

This enables too the implementation of additional contact attributes, as requested in #509 to support the SIRTFI framework.

Basically, phpdoc formatting and fixing some classes not using namespaces.

For some reason, these changes were not applied in the previous commit. Make sure we use the current interface of the SAML2 library instead of abusing the autoloader.

Reformat to comply with our coding guidelines. Migrate all the code to use the newest version of the SAML2 library, using namespaces. Fix some bugs. Move it where it belongs under modules/saml instead of modules/core.