[ANN] ruby2ruby 2.4.0 Released

ruby2ruby version 2.4.0 has been released!

* home: <https://github.com/seattlerb/ruby2ruby>
* rdoc: <http://docs.seattlerb.org/ruby2ruby>

ruby2ruby provides a means of generating pure ruby code easily from
RubyParser compatible Sexps. This makes making dynamic language
processors in ruby easier than ever!

Changes:

### 2.4.0 / 2017-07-17

* 1 major enhancement:

  * Major overhaul. Process methods no longer mutate arguments.

* 1 minor enhancement:

  * Now SEXP_STRICT=1 clean.

* 2 bug fixes:

  * Fixed 2.4 Fixnum deprecation warning
  * Fixed for new 24 parser.