Include abstract in default template.
Also ensure that the essential styles needed by
pandoc (`styles.html` partial) are included in the
templates. This is important for correct formatting
of CSL bibliographies.
Note that much of the styling in `styles.html` will
be ignored for EPUB, because of the conditional on
`document-css`, but if it is desired, you can set
the `document-css` variable.
In addition, the code generating the image has been moved
to the template, to make it more customizable.
Those who use custom EPUB templates will need to adjust their
templates, adding the code to generate the cover image.
(Previously this was just inserted into 'body'.)
Closes#5643.
daamien@411119b removes `type="text/css"` from both `<style>` and `<rel="stylesheet">` elements in all templates. However, Amazon’s kindlegen software relies on this attribute on `<link>` elements when detecting stylesheets to include.
instead of relying on CSS. Closes#4162. HTML-based templates have had
the custom CSS for div.line-block removed. Those maintaining custom
templates will want to remove this too.
We still enclose line blocks in a div with class line-block.
* Move as much as possible to the CSS in the template.
* Ensure that all the HTML-based templates (including epub)
contain the CSS for columns.
* Columns default to 50% width unless they are given a width
attribute.
Closes#4028.
We now issue `<div class="line-block">` and include a
default definition for `line-block` in the default
templates, instead of hard-coding a `style` on the
div.
Closes#1623.
All templates now include `code{white-space: pre-wrap}`
and CSS for `q` if `--html-q-tags` is used.
Previously some templates had `pre` and others `pre-wrap`;
the `q` styles were only sometimes included.
See #3485.
