Update asciidoctor requirement from 1.5.6.1 to 2.0.12

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Updates the requirements on asciidoctor to permit the latest version.

Release notes

Sourced from asciidoctor's releases.

v2.0.12

Summary

This is a minor patch release that fixes some regressions that were introduced during the long release cycle of 2.0.11. We strongly recommend upgrading to this version instead of using 2.0.11.

Notable changes include restoring the type and target on unresolved footnotes (so they display properly), fixing a crash when an extension set a numeric width or height on an SVG image when using opts=inline, resetting the word wrap behavior to normal on tables to avoid aggressive word breaks, reverting the use of a Ruby 2.3 construct that prevented Asciidoctor from working on CentOS, including the role on an inline image in the DocBook output, and passing through the explicit width and height values on an SVG image as is when using opts=inline.

Please note that it will not be possible to use Asciidoctor on Ruby < 2.3 after the 2.0.x release line. Those versions are already unsupported. However, since we had not yet made a change that prevented them from working, we'll wait until 2.1.x to do so.

During this release, all the CI jobs were migrated from Travis CI to GitHub Actions. We also added a CI job to run the test suite on macOS.

As usual, consult the CHANGELOG for all the details.

Distributions

• RubyGem (asciidoctor)

Asciidoctor is also packaged for Fedora, Debian, Ubuntu, Alpine Linux, OpenSUSE, and Homebrew. You can use the system's package manager to install the package named asciidoctor.

Release meta

Released on: 2020-11-10 Released by: @mojavelinux Release beer: For the Animals: Imperial Breakfast by Alternation Brewing Company

Logs: resolved issues | full diff | issues resolved in 2.0.x (cumulative)

Changelog

Bug Fixes

• Set type and target property on unresolved footnote reference and unset id property (fixes regression) (#3825)
• Fix crash when inlining an SVG if the explicit width or height value on the image node is not a string (#3829)
• Reset word wrap behavior to normal on tables, then reenable again for admonition content, horizontal dlist description, and AsciiDoc table cells (#3833)

Improvements

• Pass through role to DocBook output for inline image (#3832)

Compliance

• Defer use of Ruby >= 2.3 constructs to restore compatibility with Ruby 2.0 until at least next minor release (#3827)
• Don't append the default px unit identifier to the explicit width or height value when inlining an SVG (#3829)

Build / Infrastructure

• Migrate Linux CI jobs to GitHub Actions (#3837)
• Migrate Windows CI jobs to GitHub Actions (#3839)
• Run CI job on macOS (#3842)

... (truncated)

Changelog

Sourced from asciidoctor's changelog.

== 2.0.12 (2020-11-10) - @mojavelinux

Bug Fixes::

• Set type and target property on unresolved footnote reference and unset id property (fixes regression) (#3825)
• Fix crash when inlining an SVG if the explicit width or height value on the image node is not a string (#3829)
• Reset word wrap behavior to normal on tables, then reenable again for admonition content, horizontal dlist description, and AsciiDoc table cells (#3833)

Improvements::

• Pass through role to DocBook output for inline image (#3832)

Compliance::

• Defer use of Ruby >= 2.3 constructs to restore compatibility with Ruby 2.0 until at least next minor release (#3827)
• Don't append the default px unit identifier to the explicit width or height value when inlining an SVG (#3829)

Build / Infrastructure::

• Migrate Linux CI jobs to GitHub Actions (#3837)
• Migrate Windows CI jobs to GitHub Actions (#3839)
• Run CI job on macOS (#3842)

== 2.0.11 (2020-11-02) - @mojavelinux

Bug Fixes::

• Fix infinite loop when callout list with obsolete syntax is found inside list item (#3472)
• Fix infinite loop when xreftext contains a circular reference path in HTML and manpage converters (#3543)
• Apply text formatting to table cells in implicit header row when column has the "a" or "l" style (#3760)
• Fix errant reference warning for valid reference when running in compat mode (#3555)
• Initialize backend traits for converter (if not previously initialized) using assigned basebackend; mimics Asciidoctor < 2 behavior (#3341)
• Set source_location on preamble block when sourcemap option is enabled (#3799)
• Link the notitle and showtitle attributes so they act as opposites for the same toggle (#3804)
• Pass options to constructor of Rouge lexer instead of #lex method; restores compatibility with Rouge >= 3.4 (#3336)
• Don't clobber cgi-style options on language when enabling start_inline option on the Rouge PHP lexer (#3336)
• Fix parsing of wrapped link and xref text, including when an attrlist signature is detected (#3331)
• Restore deprecated writable number property on AbstractBlock
• Always use title as xreftext if target block has an empty caption, regardless of xrefstyle value (#3745)
• Allow a bibliography reference to be used inside a footnote (#3325)
• Fix bottom margin collapsing on AsciiDoc table cell (#3370)
• Remove excess hard line break in multi-line AsciiMath blocks (#3407)
• Only strip trailing spaces from lines of AsciiDoc include file (#3436)
• Remove errant optional flag in regexp for menu macro that breaks Asciidoctor.js (#3433)
• Preserve repeating backslashes when generating manpage output (#3456)
• Honor percentage width specified on macro of inline SVG (#3464)
• Removing leading and trailing blank lines in AsciiDoc include file to match assumption of parser (#3470)
• Activate extensions when :extensions option is set even if Extensions API is not yet loaded (#3570)
• Don't activate global extensions if :extensions option is false (#3570)
• Escape ellipsis at start of line in manpage output (#3645) (@jnavila)

... (truncated)

Commits

• b4aa212 Release 2.0.12
• d36cbaf Begin development on next version [skip ci]
• 74f620c Release 2.0.12.rc.2
• c276795 fix branch/tag filtering for CI workflow
• 8112f1b don't run CI workflow on tags
• 82de558 Begin development on next version [skip ci]
• 7a5c57a Release 2.0.12.rc.1
• 9ee2875 add if and unless conditions to tests to make filtering more readable (PR #3844)
• 6749601 resolves #3842 run CI job on macOS (PR #3843)
• d991aa8 add missing CHANGELOG entry for #3839 [skip ci]
• Additional commits viewable in compare view

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