+ Entities are parsed (and unicode characters returned) in both
Markdown and HTML readers.
+ Parsers characterEntity, namedEntity, decimalEntity, hexEntity added
to Entities.hs; these parse a string and return a unicode character.
+ Changed 'entity' parser in HTML reader to use the 'characterEntity'
parser from Entities.hs.
+ Added new 'entity' parser to Markdown reader, and added '&' as a
special character. Adjusted test suite accordingly since now we
get 'Str "AT",Str "&",Str "T"' instead of 'Str "AT&T"..
+ stringToSGML moved to Entities.hs. escapeSGML removed as redundant,
given encodeEntities.
+ stringToSGML, encodeEntities, and specialCharToEntity are given a
boolean parameter that causes only numerical entities to be used.
This is used in the docbook writer. The HTML writer uses named
entities where possible, but not all docbook-consumers know about
the named entities without special instructions, so it seems safer
to use numerical entities there.
+ decodeEntities is rewritten in a way that avoids Text.Regex, using
the new parsers.
+ charToEntity and charToNumericalEntity added to Entities.hs.
+ Moved specialCharToEntity from Shared.hs to Entities.hs.
+ Removed unneeded 'decodeEntities' from 'str' parser in HTML and
Markdown readers.
+ Removed sgmlHexEntity, sgmlDecimalEntity, sgmlNamedEntity, and
sgmlCharacterEntity from Shared.hs.
+ Modified Docbook writer so that it doesn't rely on Text.Regex for
detecting "mailto" links.
git-svn-id: https://pandoc.googlecode.com/svn/trunk@515 788f1e2b-df1e-0410-8736-df70ead52e1b
d06417125d
