add note for nuget

Author: tomitomi3

LibOptimization/LibOptimization.vbproj

@@ -19,6 +19,9 @@
  <PackageIcon>logo_liboptimization.png</PackageIcon>
  <RepositoryUrl>https://github.com/tomitomi3/LibOptimization</RepositoryUrl>
  <Product>LibOptimization</Product>
+ <PackageReleaseNotes>-add Competitive Particle Swarm Optimization.
+-add new support .NET Framework4.6, .NET Core 2.1, 3.0, 3.1
+-some bugfix</PackageReleaseNotes>
  </PropertyGroup>
 
  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">