version 0.7, July 23rd, 2009
----------------------------
* add Point.draw and Path.draw (alias of (Command.draw) which can mask
Command.draw in case of an open Point after an open Command
* Command.draw_arrow becomes Arrow.simple
* Arrow.draw: ~pos becomes ~anchor, new ~pos is point on path
* Arrow.draw: now gives the same result by default as Arrow.simple (former
Command.draw_arrow)
* Arrow.draw2 becomes Arrow.point_to_point
* Mlpost tool: -pdf now the default; use -ps to produce .1 files
* Mlpost tool: erases all generated intermediate files on success
o New experimental backend using Cairo; it permits output in PS, PDF, SVG and
X11; use it with commandline option -cairo. It is intended to deliver the
same results as the old metapost backend. Please send a bug report if it is
not the case
o A module Concrete which permits to compute concrete values of mlpost
objects, e.g. the float value corresponding to an object of type Num.t ,
the concrete point { x : float; y : float } corresponding to a Point.t, and
so on
o A better tree drawing algorithm (module Tree)
o new function Tree.nodel to add labels to tree edges
o "Smart" paths to construct a path by giving only a sequence of directions
(module Path)
o Histograms and Radar diagrams (modules Hist and Radar)
o The type Picture.t now is equal to the type Command.t
(no more conversion needed)
o module Box: each box has a name by default; use Box.sub to retrieve a box
with the same name inside another
o New optional argument sep of Path.strip to strip both ends of a path; used
in Tree, Box.cpath, and Helpers
o New position constructors `North, `South, `Upperleft to improve upon `Top, `Bot
etc, but the old variants are still there
