Merge branch 'master' into release/2.0

Author: zhangyang2057

NuGet.Config

@@ -2,13 +2,11 @@
 <configuration>
   <packageSources>
     <clear />
-    <add key="nuget.cnblogs.com" value="https://nuget.cnblogs.com/v3/index.json" protocolVersion="3" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
     <add key="design-packages" value="tools/design-packages" />
     <add key="sunnycase" value="https://nuget.sunnycase.moe/v3/index.json" />
   </packageSources>
   <activePackageSource>
-    <add key="nuget.cnblogs.com" value="https://nuget.cnblogs.com/v3/index.json" protocolVersion="3" />
     <add key="nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
     <add key="Nncase.Libs" value="https://www.myget.org/F/magicallibs/api/v3/index.json" protocolVersion="3" />
     <add key="myget-xunit" value="https://www.myget.org/F/xunit/api/v3/index.json" />