* Added Text.Pandoc.Pretty.
This is better suited for pandoc than the 'pretty' package.
One advantage is that we now get proper wrapping; Emph [Inline]
is no longer treated as a big unwrappable unit. Previously
we only got breaks for spaces at the "outer level." We can also
more easily avoid doubled blank lines. Performance is
significantly better as well.
* Removed Text.Pandoc.Blocks.
Text.Pandoc.Pretty allows you to define blocks and concatenate
them.
* Modified markdown, RST, org readers to use Text.Pandoc.Pretty
instead of Text.PrettyPrint.HughesPJ.
* Text.Pandoc.Shared: Added writerColumns to WriterOptions.
* Markdown, RST, Org writers now break text at writerColumns.
* Added --columns command-line option, which sets stColumns
and writerColumns.
* Table parsing: If the size of the header > stColumns,
use the header size as 100% for purposes of calculating
relative widths of columns.
This is necessary as the latex citation commands include there own
punctuation, which resulted in doubled commas for markdown documents
where citeproc output works correctly.
Now we handle a suffix after a bare locator, e.g.
@item1 [p. 30, suffix]
The suffix now includes any punctuation that introduces it.
A few tests fail because of problems with citeproc (extra space
before the suffix, missing space after comma separating multiple
page ranges in the locator).
Suffixes and prefixes are now [Inline]. The locator is separated
from the citation key by a blank space. The locator consists of
one introductory word and any number of words containing at
least one digit. The suffix, if any, is separated from the locator
by a comma, and continues til the end of the citation.
