[new release] slipshow 0.9.0: Manim Black

[panglesd]

See the release for a gif.

CHANGES:

Added

• Support for Mermaid JS (Add support for Mermaid js panglesd/slipshow#205)
• Support for syntax highlighting of all highlightjs-supported languages and themes (Highlight all languages panglesd/slipshow#200, Fix highlight js handling of missing languages panglesd/slipshow#208)
• Support for MathJax extensions, especially the html extension to allow actions to target math elements (Support actions in mathematics panglesd/slipshow#202)
• Add KaTeX as a possible alternate renderer (Support actions in mathematics panglesd/slipshow#202)
• Added carousel-fixed-size to have carousel not change size (Add Manim support panglesd/slipshow#207)

Fix

• Fix impossibility to reopen speaker view after closing it on Firefox (Fix absence of speaker view in slipshow serve panglesd/slipshow#198, issue Speaker notes won't reopen after being closed. panglesd/slipshow#194)
• Fix impossibility to open speaker view in serve mode (Fix absence of speaker view in slipshow serve panglesd/slipshow#198, issue Can't see speaker notes panglesd/slipshow#197)
• Fix links opening inside iframe (Fix absence of speaker view in slipshow serve panglesd/slipshow#198)
• Fix ending excursions with ijkl only when needed (Add Manim support panglesd/slipshow#207)
• Fixed video long-step handling (Add Manim support panglesd/slipshow#207)
• Removed confusing auto-generated IDs (Don't auto-generate id for headings panglesd/slipshow#209)
• Fix play-media behavior when facing errors (More robust play-media action panglesd/slipshow#210)

Docs

• Add how to include TikZ figures in your Slipshow presentation (Add Tikz support panglesd/slipshow#206)
• Add how to include Manim videos in your Slipshow presentation (Add Manim support panglesd/slipshow#207)

[panglesd]

The windows failure seems unrelated mingw permission:

#=== ERROR while installing mingw-w64-shims.0.2.0 =============================#
Cannot copy D:\opamroot\default\.opam-switch\build\mingw-w64-shims.0.2.0\shim.exe to D:\opamroot\default\bin\x86_64-w64-mingw32-gcc.exe (D:\opam\bin\opam.exe: "open" failed on D:\opamroot\default\bin\x86_64-w64-mingw32-gcc.exe: Permission denied).

and the opam-ci error also seems an unrelated solver timeout (and it says "2 jobs failed" but I could see only one failed):

[ERROR] Sorry, resolution of the request timed out.
        Try to specify a simpler request, use a different solver, or increase the allowed time by setting > OPAMSOLVERTIMEOUT to a bigger value (currently, it is set to 60.0 seconds).

So, the CI looks green to me.

[jmid]

LGTM, thanks!

P.S. Summarizing and explaining the CI failures is much appreciated to this maintainer! ❤️