Enable pulldown-cmark's table and footnote support

[phil-opp]

Markdown tables and footnotes are pretty useful, so it would be great if I could use them with gutenberg.

The pulldown-cmark crate already provides optional support for markdown tables and footnotes. It can be easily enabled by passing OPTION_ENABLE_TABLES | OPTION_ENABLE_FOOTNOTES to Parser::new_ext.

[Keats]

Ah, completely missed that. It's in master now

[phil-opp]

Thanks a lot, works without problems!

[jtojnar]

Looks like it is enabled here:

zola/components/rendering/src/markdown.rs

Lines 185 to 187 in f138875

	opts.insert(Options::ENABLE_TABLES);
	opts.insert(Options::ENABLE_FOOTNOTES);
	opts.insert(Options::ENABLE_STRIKETHROUGH);