title: Cannot publish package - I cannot publish 2.0.0 as the initial version
body: <p>I have published package using elm-0.18 after elm-0.19 was released.</p>
  
  <p>Now I have upgraded it to elm-0.19 but I cannot publish it:</p>
  
  <pre><code>$ ./node_modules/.bin/elm publish
  This package has never been published before. Here's how things work:
  
    - Versions all have exactly three parts: MAJOR.MINOR.PATCH
  
    - All packages start with initial version 1.0.0
  
    - Versions are incremented based on how the API changes:
  
          PATCH = the API is the same, no risk of breaking code
          MINOR = values have been added, existing values are unchanged
          MAJOR = existing values have been changed or removed
  
    - I will bump versions for you, automatically enforcing these rules
  
  
  I will now verify that everything is in order...
  
    + Found README.md
    + Found LICENSE
    X Version 2.0.0 is not correct!
  
  -- INVALID VERSION -------------------------------------------------------------
  
  I cannot publish 2.0.0 as the initial version.
  
  Change it to 1.0.0 which is the initial version for all Elm packages.
  </code></pre>