* Text.Pandoc.Writers.Shared contains shared functions used
only in writers.
* metaToJSON now takes a WriterOptions parameter, and will
return an empty object if standalone is not specified.
Previously if you set a value both in metadata and with a variable,
they'd be combined into a list. Now the variable replaces the
value in document metadata. If many variables with the same
name are set, a list is created.
Shared: metaToJSON now has an argument for a variable list.
* Depend on pandoc 1.12.
* Added yaml dependency.
* `Text.Pandoc.XML`: Removed `stripTags`. (API change.)
* `Text.Pandoc.Shared`: Added `metaToJSON`.
This will be used in writers to create a JSON object for use
in the templates from the pandoc metadata.
* Revised readers and writers to use the new Meta type.
* `Text.Pandoc.Options`: Added `Ext_yaml_title_block`.
* Markdown reader: Added support for YAML metadata block.
Note that it must come at the beginning of the document.
* `Text.Pandoc.Parsing.ParserState`: Replace `stateTitle`,
`stateAuthors`, `stateDate` with `stateMeta`.
* RST reader: Improved metadata.
Treat initial field list as metadata when standalone specified.
Previously ALL fields "title", "author", "date" in field lists
were treated as metadata, even if not at the beginning.
Use `subtitle` metadata field for subtitle.
* `Text.Pandoc.Templates`: Export `renderTemplate'` that takes a string
instead of a compiled template..
* OPML template: Use 'for' loop for authors.
* Org template: '#+TITLE:' is inserted before the title.
Previously the writer did this.
* In markdown reader, add a '\1' character to the beginning
of the title of an image that is alone in its paragraph,
if implicit_figures extension is selected.
* In writers, check for Para [Image alt (src,'\1':tit)] and treat
it as a figure if possible.
* Updated tests.
This is a bit of a hack, but it allows us to make implicit_figures
an extension of the markdown reader, rather than the writers.
Previously header ids were autogenerated by the writers.
Now they are generated (unless supplied explicitly) in the
markdown parser, if the `header_identifiers` extension is
selected.
In addition, the textile reader now supports id attributes on
headers.
escapeURI now only escapes space characters, leaving unicode characters
as they are, instead of converting them to octets and URL-encoding them,
as before. This gives more readable URIs. User agents now do the
percent-encoding themselves.
URIs are no longer unescaped at all on conversion to markdown, asciidoc,
rst, org.
Closes#349.
