ability to specify @collapse

[leoj3n]

I like the collapsing functionality this plugin already has, but it cannot be invoked on specific lines, and without specifying @highlight. I would like to be able to collapse specific lines without doing any highlighting, like:

@collapse 0-1,30-32

Could a separate plugin be made that plays nice with bit-docs-html-highlight-line, or could bit-docs-html-highlight-line be extended to offer a @collapse tag?

A compromise might be to add another option next to only, something like exact that will show exactly only the highlighted lines, and indiscriminately collapse all other non-highlighted lines, because currently only will show the next and previous three lines surrounding a highlight.