When looking up the IdP to authenticate, the try/catch block would
swallow the more specific exceptions that are generated and display
them all as a single 'not found' exception. This means that the
more specific "Metadata not found" exception page was never rendered,
or also the "Metadata expired" exception not displayed. We don't
need the try/catch here, instead can rely on the exceptions that this
call will generate by itself.

Improve error handling

* Configurable ProviderName

Co-authored-by: Tim van Dijen <tvdijen@gmail.com>

Closes #1346

Convert to our wrapper class for assertions

Fix several bugs in saml:NameIDAttribute authproc filter & raise coverage

fix_createLogoutTable_method

* 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 

* Migrate assertions to Webmozart

* Upgrade saml2-library to v4

* Stop considering Issuer-strings

* Stop considering NameID-arrays

* 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

add store option to SQLPersistentNameID

PSR-12 compliancy

As commented in #1155 1155

This is due to a recent change in master. We're no longer trying to fill the sessionID for transient sessions (doesn't even make any sense), so everywhere else where we were checking the session ID (e.g. to store the session) we need to check if it's transient instead, and give up in that case.

Integers for example are not uncommon..
This closes #1152

* Fix column and index-size for MySQL only