Allow dual syntax

We're changing the syntax for abbreviations to match recommendations from various writing style guides.

Specifically, the example from the United States Plain Language guidance:

The American Journal of Plain Language Studies (AJPLA)

Notice the abbreviation is in parentheses following the spelled out version.

This release acts as a bridge to the next major release, allowing for both of the following syntaxes:

[.abbr](abbreviation)

[.abbreviation](abbr)

It is presumed that the shorter of the two will be the content of the abbr tag.

The next major release will only support:

[.abbreviation](abbr)

Update for use with CommonMark 2+

Update to use Commonmark 2.0 #12

• No new features.
• Updated dependencies.

Extend AbstractStringContainer for compatibility with ToC, etc.

Extend AbstractStringContainer for compatibility with ToC, etc. #8

Added support for attributes on the Abbreviation element.

Added support for attributes on the Abbreviation element. #6

Patch: tests failing to run due to dependency issues

See #5

Update dependencies

1.0.3

update dependencies

Update lock file

1.0.2

Update composer.lock

Remove Shoop dependency

1.0.1

Remove Shoop dependency

Initial major release

Being used successfully on multiple production sites including:

• https://8fold.link
• https://handbook.8fold.link
• https://liberatedelephant.com
• https://joshuabruce.com
• https://joshbruce.com
• https://joshbruce.dev

Remove 8fold Markup

0.1.1

Remove 8fold Markup