packages.config

<?xml version="1.0" encoding="utf-8"?>
<packages>
  <package id="System.Collections.Immutable" version="1.1.33-beta" targetFramework="net45" />
  <package id="System.Reflection.Metadata" version="1.0.18-beta" targetFramework="net45" />
  <package id="Microsoft.Composition" version="1.0.27" targetFramework="net45" />
</packages>