Class ParamContainer

       object --+                
                |                
sip.simplewrapper --+            
                    |            
          sip.wrapper --+        
                        |        
     PyQt4.QtCore.QObject --+    
                            |    
            Qt.QtCore.QObject --+
                                |
                               ParamContainer

Known Subclasses:

• tasks.AbstractTask

This is a base class for regular objects (not desriptors) which will hold
params. Inheriting from this class is not required, as any object can hold
params and will work fine; however, doing so provides the following
benefits:

    * Convenience methods for converting to and from JSON and regular python
    dictionaries.

    * Dynamically generated signals for changes to individual param values.
    These signals are named <param name>Changed. For example, a
    ParamContainer with a param named "foo" will automatically have a signal
    called "fooChanged"

    * A general paramsChanged signal to indicate that any params have been
    changed, including nested subparams.