title: Nuget packages are not published by clickonce
body: <p>The setup: <br/>
   1. VS2017, Create Excel 2013 VSTO Add-in project <br/>
   2. Nuget install: Snappy.NET <br/>
   3. Right click => publish <br/>
   4. check publish folder, there is no Snappy.NET.dll <br/></p>
  
  <p><a href="https://i.stack.imgur.com/3gwY1.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Dz021.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/Dz021.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3gwY1.png" alt="enter image description here"></a></p>