Log Message:
textproc/ruby-review: update to 4.2.0

Update ruby-review package to 4.2.0.

4.2.0 (2020-07-23)

New Features

* introduce caption_position parameter to specify a caption position of
  image, table, list, and equation.  caption_position has child parameters
  image, table, list, and equation and the value is top or bottom (#1320)

Breaking Changes

* review-vol is rewritten.  Improved processing of parts and inline
  instructions in headings.  Changed display format.  When a part is
  specified, the volume of the part file itself is returned instead of the
  volume of the part.  The -P and --directory options have been removed
  (#1485)
* review-index is rewritten.  Most option names have been changed.  The
  number of lines and characters are now displayed only when -d option is
  specified.  review-index uses PLAINTEXTBuilder to return accurate line and
  character counts.  -y option is provided to specify a target chapter
  (#1485)

Bug Fixes

* remove duplicated @non_parsed_commands declaration (#1499)
* mathematical images not being created in WebMaker and TextMaker has been
  fixed (#1501)

Enhancements

* improve a performance of building math figures on imgmath (#1488)
* for those times when you want to hand over non-default YAML parameters to
  PDFMaker, you can write your own layouts/config-local.tex.erb file (#1505)

Others

* GitHub Actions: use ruby/setup-ruby instead of eregon/use-ruby-action
  (#1490)
* skip artifacts in the sample folder during testing (#1504)