Common utility classes for jfun project

Packages
jfun.util Provides utility classes that can be reused by the entire java functional library.
jfun.util.beans Provides helper classes to handle java bean properties.
jfun.util.dict Provides classes and interfaces for functional associative array.
jfun.util.os  
jfun.util.typing This package provides data type related utility classes.
jfun.util.yield Provides a simple framework that supports the Ruby-style yield.