title: Updating an assembly reference to target new version
body: <p>I have been doing this by a really long process that I found out and I am sure there is a better way of doing it. I am finally fed up with my process and I am going to try to find out how to do it properly.</p>
  
  <p>I have a solution which references and out of date assembly. For example, Castle.Core 1.0.3. I have newer version of Castle.Core, version 1.0.3.5422. I delete the old reference, replace assembly with new one, then add the reference to Castle.Core, but this time it is (supposed to be) a newer version. The solution still says I am referencing the old one when I deleted it and everything. I thought initially that the old assembly was hiding in the obj or bin folder so I deleted everything in the folder. Still happens. After a while of fiddling with it, I finally get it.</p>
  
  <p>This is incredibly annoying, especially when I trying to update like 5 assemblies at once.</p>
  
  <p>Help me out here? </p>