curses-extension 3.0

The Ruby curses library is sorely lacking some important features. This class extension adds a set of features that makes it much easier to create and manage terminal curses applications in Ruby. See the Github page for information on what properties and functions are included: https://github.com/isene/Ruby-Curses-Class-Extension. The curses_template.rb is also installed in the lib directory and serves as the basis for my own curses applications. New in 3.0: Major rewrite. Lots of changes/improvements.