After reviewing the version of CCK on the website, it looks like it does a much better job of handling the values shown when editing capacitance, inductance, and voltage, and also of resizing, than the latest version.
  In the web version, the circuit stays centered in the same place when you resize it, instead of jumping all over the screen.  Staying in the same place seems preferable.  Also, I don't have the problem of the voltage meter not working after resizing in the web version.  So in my opinion, these issues should be fixed before posting the new version.