title: Where are dotnet tool versions defined?
body: <p>How is are dotnet tools versioned and where is that version number set in code?</p>
  <p>The latest version of this dotnet tool is 1.7.0 <a href="https://github.com/tonerdo/coverlet" rel="nofollow noreferrer">https://github.com/tonerdo/coverlet</a></p>
  <p>Where is 1.7.0 defined? I don't see it anywhere and it's not the assembly version.</p>
  <p>I want to install an older version but I can't find any dotnet commands that list previous versions of a tool.</p>
  <p>Specifically, I need a version of coverlet that supports netcoreapp2.1</p>