Update asciidoctor-pdf requirement from 1.6.0 to 2.1.2

[dependabot]

Updates the requirements on asciidoctor-pdf to permit the latest version.

Release notes

Sourced from asciidoctor-pdf's releases.

v2.1.2

This is a patch release in the 2.1.x release line. It fixes a few minor bugs. If the layout is changed from portrait to landscape or vice-versa in the main document, that same change is applied to the scratch document. This ensures that the extent of the content block is computed correctly. If an extended converter overrides the get_entries_for_toc method, the converter looks at that result instead of Document#sections? to determine if the TOC should be inserted. And the converter now uses the correct logic to insert an empty page before the TOC with automatic placement in a prepress book.

Numerous updates and enhancements were made to the docs during this release cycle as well.

The 2.2.x release line will be created following this patch release.

Distribution

• RubyGem (asciidoctor-pdf)

Changelog

Bug Fixes

• apply page layout from main document to new page in scratch document (#2248)
• use correct logic to insert page before TOC with automatic placement when doctype=book and media=prepress
• use get_entries_for_toc to determine if the TOC is non-empty rather than Document#sections?

Release meta

Released on: 2022-06-17 Released by: @​mojavelinux Release beer: Strata-Ford IPA by Athletic Brewing Co.

Logs: resolved issues | full diff

Credits

A very special thanks to all the awesome supporters of the Asciidoctor OpenCollective campaign, who provide critical funding for the ongoing development of this project.

Changelog

Sourced from asciidoctor-pdf's changelog.

== 2.1.2 (2022-06-17) - @​mojavelinux

Bug Fixes::

• apply page layout from main document to new page in scratch document (#2248)
• use correct logic to insert page before TOC with automatic placement when doctype=book and media=prepress
• use get_entries_for_toc to determine if the TOC is non-empty rather than Document#sections?

=== Details

{url-repo}/releases/tag/v2.1.2[git tag] | {url-repo}/compare/v2.1.1...v2.1.2[full diff]

== 2.1.1 (2022-06-15) - @​mojavelinux

Improvements::

• store zero-based column on Extent for extensions to use to position cursor at start of extent

Bug Fixes::

• place block image in SVG format in correct column when align is left and page columns are enabled (#2241)
• accurately trap LoadError from CodeRay if source language is not recognized on code block
• only draw rounded rectangle around phrase if border-radius is > 0
• use base-border-color value if border width is set on role for inline phrase but not border color

=== Details

{url-repo}/releases/tag/v2.1.1[git tag] | {url-repo}/compare/v2.1.0...v2.1.1[full diff]

== 2.1.0 (2022-06-11) - @​mojavelinux

Enhancements::

• arrange body of article or manpage doctype into multiple columns if page-columns key is set in theme (#327)
• allow column gap to be specified using page-column-gap key (#327)
• introduce convert_index_categories method to handle rendering of categories for index inside column box (#327)
• rename convert_index_list method to convert_index_term to make its purpose more clear (#327)
• add save_theme helper to work with a copy of the theme within a scope (#2196)
• add support for scale attribute or iw unit on pdfwidth attribute on image macros (#1933)
• add backlink from bibref on bibliography entry to first reference to that entry in the document (#1737)
• preserve text formatting on index term in index section (#897)
• don't insert page break between part and first chapter if heading-part-break-after key in theme is avoid (#1795)

=== Details

{url-repo}/releases/tag/v2.1.0[git tag] | {url-repo}/compare/v2.0.8...v2.1.0[full diff]

== 2.0.8 (2022-06-08) - @​mojavelinux

Improvements::

... (truncated)

Commits

• 119cfac release 2.1.2 [no ci]
• 3a7c783 resolves #2248 apply page layout from main document to new page in scratch do...
• 1974870 include page number on rectangle extracted by rectangle inspector in test suite
• db8cf5b document that {page-layout} can be used in path of background image for runni...
• f92b04b use turn off in place of disable in the docs
• 0c7c951 consolidate call to restore imagesdir in apply_subs_discretely
• d5a8669 use more self-explanatory variable name in text transform [no ci]
• 0eb7d3b use get_entries_for_toc to determine if the TOC is non-empty rather than Docu...
• 4d60c28 verify toc is not inserted at default location if document has no sections
• 75f6af2 use correct logic to insert page before TOC with automatic placement when doc...
• Additional commits viewable in compare view

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[dependabot]

Superseded by #174.