title: NuGet API not serving the latest version of a package
body: <p>This is not the first time it has happened, so I assume it's a bug where in the pipeline of NuGet Client / Visual Studio / NuGet server. A package has just been updated on NuGet.org. The latest version is 3.0.0.14. When I went to upgrade my package it couldn't find it and it said I had the latest version. After using Fiddler to see what was going over the wire, it's clear the NuGet Server is not serving the latest information. This call returns version 3.0.0.13 as the latest version.</p>
  
  <p><a href="https://api.nuget.org/v3/registration1/tweetmoasharp/index.json" rel="nofollow">https://api.nuget.org/v3/registration1/tweetmoasharp/index.json</a></p>
  
  <p>Is that a bug on NuGet Server? Do they have a deliberate caching? Is it something the package publisher did that he didn't mark as a stable version?</p>