Updated to .NET Standard for compatability.

Author: Oren (electricessence)

Open.Threading.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp1.1</TargetFramework>
+    <TargetFramework>netstandard2.0</TargetFramework>
     <Authors>electricessence</Authors>
     <Company />
     <Product />
@@ -10,14 +10,15 @@
 Part of the "Open" set of libraries.</Description>
     <PackageLicenseUrl>https://github.com/electricessence/Open.Threading/blob/master/LISCENSE.md</PackageLicenseUrl>
     <GeneratePackageOnBuild>True</GeneratePackageOnBuild>
-    <Version>1.2.1</Version>
-    <AssemblyVersion>1.0.0.1</AssemblyVersion>
-    <FileVersion>1.0.0.1</FileVersion>
+    <Version>1.3.0</Version>
+    <AssemblyVersion>1.3.0.0</AssemblyVersion>
+    <FileVersion>1.3.0.0</FileVersion>
     <Copyright>https://github.com/electricessence/Open.Threading/blob/master/LISCENSE.md</Copyright>
     <PackageProjectUrl>https://github.com/electricessence/Open.Threading/</PackageProjectUrl>
     <RepositoryUrl>https://github.com/electricessence/Open.Threading/</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
     <PackageTags>dotnet, dotnet-core, dotnetcore, cs, collections, extensions, threadsafe, thread-safe, readwrite, read-write, readerwriterlock, readerwriterlockslim</PackageTags>
+    <PackageReleaseNotes>Updated to .NET Standard for compatability.</PackageReleaseNotes>
   </PropertyGroup>
 
   <ItemGroup>
@@ -32,8 +33,8 @@ Part of the "Open" set of libraries.</Description>
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Open.Diagnostics" Version="1.2.0" />
-    <PackageReference Include="Open.Threading.ReadWrite" Version="1.0.3" />
+    <PackageReference Include="Open.Diagnostics" Version="1.3.0" />
+    <PackageReference Include="Open.Threading.ReadWrite" Version="1.1.0" />
   </ItemGroup>
 
 </Project>