Release Name: 1.1.0

Notes:
Unified interface to command-line, environment, and configuration files.


Changes:
Version 1.1.0
  * Handles YAML files as well as XML.
  * Minor, incompatible changes to the API.
  * Command-line arglist handling now works with other sources the
    way options do. In particular, an empty arglist can, for example, 
    have its value given by defaults rather than locking the value
    of the choice down to the empty array.
  * Command-line arglists used to have their length specified independently
    of all other sources. Now there's a :length "type" that applies to all
    sources, including the command line. From the user's point of view,     
    though, wrong-sized arglists look like they're caught by OptionParser.
  * These relatively minor changes required a bigger overhaul to the 
    internals. They're less stupid, but I suspect they're still stupid.
  * A tutorial.
 
Version 1.0.0
  * Version from _Everyday Scripting with Ruby_