PHP 8.4 Update

Included in this release:

• Core: Upgraded code for PHP8.4, now minimum requirement.
• Core: Added agentic coding compatibility.
• Composer: Added test and analyze commands.

Category backticks

Included in this release:

• Parser: Added backtick support for change categories, e.g. `(C)`.
• Docs: Added docs on using change category symbols.

Relaxed dependency constraints

Included in this release:

• Dependencies: Relaxed AppUtils version restrictions for more flexibility.

Version parser update

Included in this release:

• Dependencies: Updated version parser to v2.0.0.
• Added toJSONFile().
• Added parseJSONFile().

Initial release

Included in this release:

• Initial feature set with Markdown parsing and serialization.