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

@@ -10,8 +10,8 @@ CHANGELOG
 5.1.0
 -----
 
-* Added an `UninitializedPropertyException`
-* Linking to PropertyInfo extractor to remove a lot of duplicate code
+ * Added an `UninitializedPropertyException`
+ * Linking to PropertyInfo extractor to remove a lot of duplicate code
 
 4.4.0
 -----
@@ -22,9 +22,9 @@ CHANGELOG
 4.3.0
 -----
 
-* added a `$throwExceptionOnInvalidPropertyPath` argument to the PropertyAccessor constructor.
-* added `enableExceptionOnInvalidPropertyPath()`, `disableExceptionOnInvalidPropertyPath()` and
-  `isExceptionOnInvalidPropertyPath()` methods to `PropertyAccessorBuilder`
+ * added a `$throwExceptionOnInvalidPropertyPath` argument to the PropertyAccessor constructor.
+ * added `enableExceptionOnInvalidPropertyPath()`, `disableExceptionOnInvalidPropertyPath()` and
+   `isExceptionOnInvalidPropertyPath()` methods to `PropertyAccessorBuilder`
 
 4.0.0
 -----