title: What does 'npm outdated --depth=0 ' mean to do as ask action when seeing differences?
body: <p>When running the command <em>npm outdated --depth=0</em> I see the following:</p>
  
  <pre><code>Package                       Current  Wanted      Latest  Location
  cordova                         5.4.1   5.4.1       6.0.0  cordova
  grunt-angular-templates         0.5.9   0.5.9       1.0.3  grunt-angular-templates
  grunt-autoprefixer              0.4.2   0.4.2       3.0.4  grunt-autoprefixer
  grunt-bump                      0.3.4   0.3.4       0.7.0  grunt-bump
  ...
  </code></pre>
  
  <p>What does those differences between 'Current', 'Wanted' and 'Latest' mean to me? Respectively what am I supposed to do in case?</p>