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)
753bb26dc2