This is the November 2021 Update (v2.10.0) (#671)

* Packaging improvements, NuGet readmes, and 2.10 release notes

* Fix GitHub README rendering issues

* Attempt to fix whitespace

* push push push push push push push

* Actually fix whitespace

* Update common.props

* Update Directory.Build.props

Author: Perksey

src/Maths/Directory.Build.props

@@ -0,0 +1,6 @@
+<Project>
+    <PropertyGroup>
+        <SilkDescription>A small and portable mathematics and linear algebra library, useful in graphics and compute workloads.</SilkDescription>
+        <SilkExtendedDescription>This package has no other Silk.NET dependencies, so feel free to use it any project in any workload regardless of whether it uses other Silk.NET libraries or not. This is akin to System.Numerics.Vectors, only with extra types and generics (so any numerical type can be used rather than just float).%0a%0aCurrently supports:%0a- Half%0a- float%0a- double%0a- decimal%0a- byte%0a- sbyte%0a- ushort%0a- short%0a- uint%0a- int%0a- ulong%0a- long%0a- Complex%0a- BitInteger</SilkExtendedDescription>
+    </PropertyGroup>
+</Project>