Finalize release notes for 5.6.1

Author: marcphilipp

documentation/src/docs/asciidoc/release-notes/release-notes-5.6.1.adoc

@@ -1,7 +1,7 @@
 [[release-notes-5.6.1]]
 == 5.6.1
 
-*Date of Release:* ❓
+*Date of Release:* March 22, 2020
 
 *Scope:* Bug fixes since 5.6.0
 
@@ -15,15 +15,10 @@ on GitHub.
 
 ==== Bug Fixes
 
-* ❓
-
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
+* Don't cache URL when loading `junit-platform.properties` contents to avoid file locking
+  issues on Windows
+* Only warn about multiple `junit-platform.properties` on the classpath if they have
+  different URLs
 
 
 [[release-notes-5.6.1-junit-jupiter]]
@@ -34,26 +29,8 @@ on GitHub.
 * `TestInstancePreDestroyCallback` extensions are now invoked in reverse registration
   order when `PER_CLASS` test instance lifecycle semantics have been configured.
 
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
-
 
 [[release-notes-5.6.1-junit-vintage]]
 === JUnit Vintage
 
-==== Bug Fixes
-
-* ❓
-
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
+No changes.