docs: update the docs for 1.20
commitaa412af11f84e60f56701e16c40968d55632f6a3
authorStefan Sauer <ensonic@users.sf.net>
Sun, 9 Feb 2014 11:01:06 +0000 (9 12:01 +0100)
committerStefan Sauer <ensonic@users.sf.net>
Sun, 9 Feb 2014 11:01:06 +0000 (9 12:01 +0100)
tree4fa5a72699f7b2c2d23039a7068ada2f79a33c3b
parentaf19cf4b8447386d909aff46fb88b3ca64eab243
docs: update the docs for 1.20

Add a section 'modernizing' that helps to decide which verison to require for which feature.
Expand the markdown support a little.
help/manual/C/index.docbook