[ANN] ruby2ruby 2.4.1 Released

ruby2ruby version 2.4.1 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:

### 2.4.1 / 2018-02-15

* 2 minor enhancements:

  * Added bitwise ops to BINARY. (david942j)
  * Added rewrite_call|if|until|while to normalize `not` in conditions.