This will maybe solve the "InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable" error in firefox.

Add plain class for plain images

Allow tex parsing in <code> tags

README: suggest decktape as an alternative for PDF rendering

It works around the current PDF rendering bugs like #1261

Updated to Highlightjs 8.6 with all languages supported.

Allows to specify PORT from env on multiplex plugin

enabling launching presentation with npm-start

broken <table> html in demo deck

`licenses` field is deprecated

the `licenses` field in package.json is deprecated. https://docs.npmjs.com/files/package.json#license

The `license` field is the recommended field and expects an SPDX expression.

Removed leap motion plugin from main project

PDF exporting also works with Chromium

Added missing comma on the configuration example

Correct Readme.md -> Theming -> sky

Update index.html