Facets 2.8.3 released

Just released Facets 2.8.3. Release notes are below. This release
should be the last in the 2.8.x series. The next release, in fact,
will be 3.0 as Facets will be making the transition of a modular
design instead of adding extension methods directly into core classes.
Please let me know if you have any thoughts/concerns about this.

Release Notes
===========

This release makes a few adjustments in Kernel core extensions, adds a
few new extensions, plus some additions, and other small improvements.
Probably the biggest change is the addition of Recusor, which is
created via Enumerable#recursive. This class is somewhat like
Enumerator and provides a number of recursive methods. Be sure to note
the couple of extensions that have been renamed as those are the most
likely to cause issues when upgrading.

Changes:

* 9 New Core Extensions

  * Enumerable#recursive provides a number of other recursive methods.
  * Enumerable#visit can be used to recursively iterate any
Enumerable.
  * Module#set has been added (from Sinatra).
  * Symbol#/ is added to be like String#/.
  * Struct#to_h is added and will ultimately replace
Struct#attributes.
  * ObjectSpace#reflect routes method calls to Kernel context.
  * Hash#to_module converts a hash to mixin module (Jay Fields).
  * Kernel#dup! is same as #try_dup from extlib.
  * Add File#ext which is a useful variation of #extname (Lavir the
Whiolet).

* 3 Core Extensions Renamed

  * renamed #set_from to #assign_from (but kept #set_from as alias
while Kernel#set is considered).
  * rename #populate to #assign and improved.
  * Kernel#instance_vars is now Kernel#instance, and also more useful.

* 1 Core Deprecation

  * Removed #instance_eval hack.

* 2 Core Bug Fixes

  * #map_with_index now uses #each_with_index.
  * #to_proc_with_response spelling correction.

* 1 Core Adjustment

  * Aliased #metadef to #meta_def.

* 3 New More Libraries

  * casting_hash.rb provides CastingHash class, a hash with flexible
keys and values.
  * prepend.rb allows for AOP-like inclusion of modules.
  * roman.rb provides simple roman numeral extensions to String and
Integer.

* 5 More Improvements

  * Pathname#visit for iterating all entries beneath a path
(chikamichi).
  * Pathname#to_str, b/c Pathname is basically a type of String (from
extlib).
  * Range#at_rand in random.rb handles Float ranges (Lavir the
Whiolet).
  * FileUtils#cp_rx provides controlled copies.
  * Stash class in stash.rb is improved and is now available as a
stand-alone library.

* 2 More Deprecations

  * ioredirect.rb has been removed as IORedirect no longer worked.
  * plugin_manager.rb has been removed. Use 'plugin' gem instead.