ST Lang

This is an extension for vscode, aiming to provide code features for stdn, urls and ston. These three languages are designed for typesetting and are collectively called "simple text languages" or "st langs" for short. Note that they are totally different from the programming language "structured text" which is also abbreviated as st.

Here are main features.

- Highlight for all st langs.

- Format for all st langs.

- Preview for stdn and urls.

- Auto reload preview when saving.

- Line corresponding in preview when saving.

- Reverse line corresponding in preview when double clicking.

- Completion of katex commands in stdn.

- Completion, hover, reference and rename of ids in stdn.