Merge pull request dotnet#1095 from sergeybykov/feature-serializer-kn…

…owntype

Fixed CodeGen: Allow [KnownType] & [KnownAssembly] hints, fix AssemblyProcessor scanning

Merge pull request dotnet#980 from sergeybykov/beta1

Preparations for publishing 1.1.0-beta1

Update OrleansTestingHost.csproj

Fix ToolVersion=12

Merge pull request dotnet#444 from sergeybykov/1.0.8

Uniformity of NuGet packages versions and bump up to 1.0.8.