[REQ] Folding Headers

[semicolonsnet]

I use a number of long text files with headings, and would love a feature that allowed collapsing and expanding headers, as in apps like FoldingText or add-ons like https://atom.io/packages/markdown-folding

[gingerbeardman]

+1

[martingaik]

+1

[qiuhefeng]

+1