title: Can't publish version to npm?
body: <p>Trying to update my npm package. Both <a href="https://www.npmjs.org/package/humanize-duration" rel="noreferrer">the npm website</a> and <a href="https://gist.github.com/EvanHahn/bde5cd4379b7ac57cc42" rel="noreferrer"><code>npm info</code></a> say that I'm at version 0.6.1.</p>
  
  <p>But when I bump the version to 0.7.0, I get a "cannot publish over existing version" error:</p>
  
  <pre><code>npm ERR! publish fail Cannot publish over existing version.
  npm ERR! publish fail Update the 'version' field in package.json and try again.
  npm ERR! publish fail
  npm ERR! publish fail If the previous version was published in error, see:
  npm ERR! publish fail     npm help unpublish
  npm ERR! publish fail
  npm ERR! publish fail To automatically increment version numbers, see:
  npm ERR! publish fail     npm help version
  
  npm ERR! System Darwin 13.1.0
  npm ERR! command "node" "/usr/local/bin/npm" "publish" "."
  npm ERR! cwd /Users/evanhahn/HumanizeDuration.js
  npm ERR! node -v v0.10.21
  npm ERR! npm -v 1.3.11
  npm ERR! code EPUBLISHCONFLICT
  npm ERR!
  npm ERR! Additional logging details can be found in:
  npm ERR!     /Users/evanhahn/HumanizeDuration.js/npm-debug.log
  npm ERR! not ok code 0
  </code></pre>
  
  <p>I've never pushed 0.7.0.</p>
  
  <p>I also tried pushing 0.7.1 and it gave the same error.</p>
  
  <p>Thoughts?</p>