title: F# compiler and runtime version number confusion
body: <p>I am unable to figure out which version of the F# Core runtime library should be used in combination with the Mono platform (.NET 3.5).</p>
  
  <ul>
  <li>Installed with Microsoft .Net 4.5 come two versions of the FSharp Core runtime, 2.3.0.0 and 4.3.0.0. My guess is that the first one is for use in the .NET framework 2.0 and later and that the second one can only be used by .NET 4.0 or later. Is this assumption correct?</li>
  <li>Since FSharp is now open source and available on Github, I can check out a recent tag, build it and use the FSharp.Core dll it produces in my project. What I do not know is how the version number on the open source FSharp relates to closed-source ones included in the .NET package?</li>
  <li>The open source compiler version is now 3.0.25 and the closed source compiler seems to be 4.0, I'm confused:
  <ul>
  <li>How does the FSharp.Core Runtime version (also 3.0.25) from the open source project relate to the closed source 2.3.0.0 version? Since the number 3.0.25 is much higher than 2.3.0.0 I'm assuming the open source version is much newer, but I'm not really sure, since I don't know if the version numbers can be compared.</li>
  <li>NuGet on the other hand offers FSharp.Core 2.0 and 4.0, which seems to be pretty old. Why is the new version not yet uploaded to NuGet?</li>
  </ul></li>
  </ul>