Make v2 release stable

[yhatt]

We have recognized that Marp users who use GUI are including a lot of beginners and non-developers, so we think we should provide enough window time for them to review breaking changes.

— Ecosystem update: Marp Core v3 & Slide transitions in CLI v2 | Blog | Marp

We have taken enough transition period about half year, and ready to make stable v2 release. The next minor release v2.4.0 will be a first stable release of v2.

Difference from v1

See also release notes.

Breaking

• VS Code 1.72 or later is required

Core update

• Marp for VS Code v2 is using current version of Marp Core (v3)
  • Changed the default math typesetting library, from KaTeX to MathJax
  • Updated default theme to follow GitHub style
  • CSS styling update for auto-scaled component
  • URL without HTTP(S) scheme does no longer auto-linkify

Added settings

• markdown.marp.pdf.outlines setting
  • Export PDF with outlines (also known as bookmarks)

• [EXPERIMENTAL] markdown.marp.strictPathResolutionDuringExport setting
  • It will apply path resolution based on VS Code workspace, to resources used by Markdown, and make more compatible export result with VS Code Markdown preview

Removed settings

• markdown.marp.toolbarButtonForQuickPick setting
  • The toolbar button still can hide from VS Code user interface

Deprecated

• Shorthanded image syntax for setting text color and background color (![](color) and ![bg](color))
  • You can fix easily from light bulb menu on VS Code