Merge branch '5.1' into 5.2

* 5.1:
  Fix licence
  Fix CS in link binary
  [Cache] remove no-op
  Fix CS in Changelogs
  [Notifier][Sinch] Add tests
  [Notifier] [Nexmo] Add tests
  [Notifier][OvhCloud] Add tests
  [Notifier] [Free Mobile] Rename method to match other bridges
  [Cache] fix setting "read_timeout" when using Redis
  Fix CS in changelogs
  [Notifier] Streamline README files

Author: derrabus

CHANGELOG.md

@@ -177,7 +177,6 @@ CHANGELOG
  * added `TaggedIteratorArgument` with YAML (`!tagged foo`) and XML (`<service type="tagged"/>`) support
  * deprecated `AutowireExceptionPass` and `AutowirePass::getAutowiringExceptions()`, use `Definition::addError()` and the `DefinitionErrorExceptionPass` instead
 
-
 3.3.0
 -----
 
@@ -246,8 +245,8 @@ CHANGELOG
 2.5.0
 -----
 
-* added DecoratorServicePass and a way to override a service definition (Definition::setDecoratedService())
-* deprecated SimpleXMLElement class.
+ * added DecoratorServicePass and a way to override a service definition (Definition::setDecoratedService())
+ * deprecated SimpleXMLElement class.
 
 2.4.0
 -----