3.0.0-alpha.2

Development:

• Add support for attributes on tables. (#310, #313, 8786408)

Default Renderer Prototypes:

• Correctly handle multiple heading identifiers. (3ae1b0d)
• Add alt text to figures. (#312)

Documentation:

• Add a link to TUG 2023 slides and video to the README. (ce6047b, adb69e2)

Unit Tests:

• Rewrite the unit testing framework from Bash to Python and implement summarization. (#245, #314)