Publish jOOPL 2.4.1

First of all, sorry because of the small interval since last pull request... I discovered some important issues in 2.4.0 and that's why I'm pulling 2.4.1.

This version comes with:
- Better exception handling approach (see http://mfidemraizer.github.io/joopl/classes/Exception%20handling%20best%20practices.html)
- Constructors were unable to call most specialized versions of class members (inheritance/polymorphism). Now this is fixed.
- More detailed documentation!

Thank you for adding it to your CDN, I appreciate your effort.