Fix pyscripter#17

 - Major refactoring and clean-up - In Delhi version newer than XE, enhanced RTTI is used to provide access to methods, fields and properties. So in most cases you no longer need to create wrapping classes. - __published__ property was replaced with the implementation of the __dir__() method, so that you can do for example dir(MainForm) to inspect the methods, fields and properties of MainForm. - Demo 31 has been updated to test/showcase some of the new features.

Author: pyscripter