Markdown headers are not syntax highlighted in VS Code

[scottmc42]

Describe the bug
In Visual Studio Code, viewing a markdown file, the headers are still in plain white. In IntelliJ/PyCharm, the headers are given different colors based on level; i.e. H1 is light red, H2 is light blue, H3 is light green, etc.

This is true for both the hashtag format, "#, ##, ###...", and the underline format, "====, ----", in markdown files.

To Reproduce
Steps to reproduce the behavior:

1. Install and use the Hiberbee theme
2. Load a markdown file
3. Examine any header lines

Expected behavior
Each of the headers should be in a different color based on the header level.

Desktop (please complete the following information):

• OS: MacOS, Ventura 13.4, M1 CPU
• VS Code: 1.80.0
• Hiberbee: 0.5.0

Additional context
Other markdown elements are colored/syntax highlighted.

Screenshot