Write release notes for QuikGraph.Serialization module.

Author: KeRNeLith

RELEASE_NOTES.md

@@ -1,5 +1,14 @@
 # Release notes
 
+## What's new in 2.2.1 June 19 2020
+
+### QuikGraph.Serialization
+
+#### Fixes:
+* Rely on embedded GraphML xsd to validate GraphML graphs during serialization (avoid issues when GraphML website is down).
+
+---
+
 ## What's new in 2.2.0 June 7 2020, June 11 2020 and June 18 2020
 
 ### QuikGraph

src/QuikGraph.Serialization/QuikGraph.Serialization.csproj

@@ -28,9 +28,9 @@ Supports Source Link</Description>
 
     <IsPackable>true</IsPackable>
     <PackageId>QuikGraph.Serialization</PackageId>
-    <PackageReleaseNotes>➟ Release 2.2.0
-New:
-- Use signing key to strong name library assemby.</PackageReleaseNotes>
+    <PackageReleaseNotes>➟ Release 2.2.1
+Fixes:
+- Rely on embedded GraphML xsd to validate GraphML graphs during serialization (avoid issues when GraphML website is down).</PackageReleaseNotes>
     <PackageTags>QuickGraph QuikGraph Graph Structure Algorithm C# .NET Serialization</PackageTags>
   </PropertyGroup>