Bumped version to 0.4.1

Author: vsapronov

FSharp.Json.Giraffe/FSharp.Json.Giraffe.fsproj

@@ -8,7 +8,7 @@
         <Copyright>Copyright 2020</Copyright>
         <PackageTags>F# JSON serialization Giraffe</PackageTags>
         <RepositoryUrl>https://github.com/vsapronov/FSharp.Json</RepositoryUrl>
-        <Version>0.4.0</Version>
+        <Version>0.4.1</Version>
     </PropertyGroup>
 
     <ItemGroup>

FSharp.Json/FSharp.Json.fsproj

@@ -8,7 +8,7 @@
     <Copyright>Copyright 2019</Copyright>
     <PackageTags>F# JSON serialization</PackageTags>
     <RepositoryUrl>https://github.com/vsapronov/FSharp.Json</RepositoryUrl>
-    <Version>0.4.0</Version>
+    <Version>0.4.1</Version>
   </PropertyGroup>
 
   <ItemGroup>

RELEASE_NOTES.md

@@ -1,5 +1,8 @@
 # Release Notes
 
+## 0.4.1
+* Refactored union support.
+
 ## 0.4.0
 * Fixed no fields union case (de)serialization - not backward compatible.