Update usage and import paths with and without package management.
Document the dep transitive dependency issue and how to get around it.
Couple more minor edits.
Unexport a bunch of constants private to HTML renderer
They were cluttering the documentation and are not useful otherwise.
Rearrange constants in descending dependencies order
This commits adds flag `HTML_SMARTYPANTS_QUOTES_NBSP` which, when combined with `HTML_USE_SMARTYPANTS` will insert non-breaking spaces between the double quotes and the contained text.
This is mostly relevant for use in French with `HTML_SMARTYPANTS_ANGLED_QUOTES`.
It should not hurt existing code path in the performance department:
```
name old time/op new time/op delta
SmartDoubleQuotes-4 2.58µs ± 1% 2.58µs ± 1% ~ (p=1.000 n=5+5)
name old alloc/op new alloc/op delta
SmartDoubleQuotes-4 5.27kB ± 0% 5.27kB ± 0% ~ (all samples are equal)
name old allocs/op new allocs/op delta
SmartDoubleQuotes-4 13.0 ± 0% 13.0 ± 0% ~ (all samples are equal)
```
Fixes#378
Improve Renderer to be less confusing. Fix documentation for it.
OmitContents flag got dropped along the way. First, it would fit poorly
into the new design and second, it's unclear how widely this feature is
used. But most importantly, it's trivial to roll your own with the v2
API: https://gist.github.com/rtfb/2693f6bfcc1760661e8d2fb832763a15Fixes#368.
It is necessary to use vector for 'notes' instead of map to keep
footnotes ordered. But checking for presence in a vector is not
efficient. So add a map variable 'notesRecord' to tackle this problem.
Fix the infinite loop when there is a self-refer footnote by checking if
the reference is already added into parser.notes.
It also fixes of creating duplicate footnotes through this modification.
Add coresponding testcase.
The goal of this change is to reduce number of non-standard library
packages (repositories) that blackfriday imports from 1 to 0, and in
turn, reduce the cost of importing blackfriday into other projects.
Do so by documenting the algorithm of SanitizedAnchorName, and include
a copy of the small function inside blackfriday itself. The same
functionality continues to be available in the original location,
github.com/shurcooL/sanitized_anchor_name.Create. It can be used by
existing users and those that look for a small package, and don't need
all of blackfriday functionality. Existing users of blackfriday can use
the new SanitizedAnchorName function directly and avoid an extra
package import.
Resolves#350.
