Prepare release 9.1.0-beta1 for the JSON helper package.

Author: OlegRa

DateTimeOnly.Json/DateTimeOnly.Json.csproj

@@ -52,11 +52,13 @@
 
   <PropertyGroup>
     <PackageReleaseNotes>
-- The `Portable.System.DateTimeOnly` updated to version 9.0.0-beta1, so we need this package to be pre-released as well.
+- The `System.Text.Json.DateOnly` class was renamed to `System.Text.Json.JsonDateOnly` to prevent ambiguous name resolution problems.
+- The `System.Text.Json.TimeOnly` class was renamed to `System.Text.Json.JsonTimeOnly` to prevent ambiguous name resolution problems.
+- Thanks, @Swimburger, for pointing out this problem with breaking out the existing code just by adding the NuGet package.
     </PackageReleaseNotes>
-    <AssemblyVersion>9.0.0.1</AssemblyVersion>
-    <FileVersion>9.0.0.1</FileVersion>
-    <Version>9.0.0</Version>
+    <AssemblyVersion>9.1.0.0</AssemblyVersion>
+    <FileVersion>9.1.0.0</FileVersion>
+    <Version>9.1.0-beta1</Version>
   </PropertyGroup>
 
   <PropertyGroup>

DateTimeOnly.Json/README.md

@@ -18,7 +18,7 @@ The main disadvantage of this "direct" approach for configuring [`System.DateOnl
 
 Unfortunately, attributes-based approach will not work if you'll try to use [`System.DateOnly`](https://docs.microsoft.com/dotnet/api/system.dateonly) and/or [`System.TimeOnly`](https://docs.microsoft.com/dotnet/api/system.timeonly) data types with the [`System.Text.Json`](https://docs.microsoft.com/dotnet/api/system.text.json) source generators. The only way to make generated code compilable is to use any type names not equal to [`System.DateOnly`](https://docs.microsoft.com/dotnet/api/system.dateonly) and/or [`System.TimeOnly`](https://docs.microsoft.com/dotnet/api/system.timeonly) available in object graph processed by the source generator.
 
-The package provides two helper types: `System.Text.Json.DateOnly` and `System.Text.Json.TimeOnly` (same class names but different full type names). These types have no public properties but they provide implicit conversion operations from/to the [`System.DateOnly`](https://docs.microsoft.com/dotnet/api/system.dateonly) and [`System.TimeOnly`](https://docs.microsoft.com/dotnet/api/system.timeonly) data types respectively. You can use them safely in your JSON-mapping objects with any type of serialization available in the [`System.Text.Json`](https://docs.microsoft.com/dotnet/api/system.text.json) library. These types have custom [`System.Text.Json.Serialization.JsonConverterAttribute`](https://docs.microsoft.com/dotnet/api/system.text.json.serialization.jsonconverterattribute) applied with helper converters that delegate work to `System.Text.Json.DateOnlyConverter` and `System.Text.Json.TimeOnlyConverter` types without code duplication.
+The package provides two helper types: `System.Text.Json.JsonDateOnly` and `System.Text.Json.JsonTimeOnly` to solve this problem. These types have no public properties, but they provide implicit conversion operations from/to the [`System.DateOnly`](https://docs.microsoft.com/dotnet/api/system.dateonly) and [`System.TimeOnly`](https://docs.microsoft.com/dotnet/api/system.timeonly) data types respectively. You can use them safely in your JSON-mapping objects with any kind of serialization available in the [`System.Text.Json`](https://docs.microsoft.com/dotnet/api/system.text.json) library. These types have custom [`System.Text.Json.Serialization.JsonConverterAttribute`](https://docs.microsoft.com/dotnet/api/system.text.json.serialization.jsonconverterattribute) applied with helper converters that delegate work to `System.Text.Json.DateOnlyConverter` and `System.Text.Json.TimeOnlyConverter` types without code duplication.
 
 ## Contributors