New feature: Use line numbers as fragment identifiers to point a specific line, like what GitHub has

[dongskyler]

Motivation

Use line numbers as fragment identifiers to point a specific line, like what GitHub has. It will be very convenient and useful to be able to refer to a specific line in the code.

Description

Just like in GitHub's code previews, when I click on a line number, a fragment identifier of #LXXX is appended to the URL. For example, if I click on line 16, "#L16" is appended to the existing URL.

I can use fragment identifiers to point to a specific line, when I visit a URL with a fragment identifier.

It will be a little tricky, when several code blocks are present on the same webpage. For example, if I have 2 code blocks (with more than 5 lines of code in each), when I want to refer to line 5 in the second code block, it will be a little tricky. There must exist some other form of identification/reference to distinguish among different code blocks. GitHub doesn't have this issue, because, I believe, GitHub only displays one code block on a webpage.

[RunDevelopment]

This shouldn't be too hard to implement given that Line Highlight already implements most of the required features (see linking example).

[dongskyler]

This is great