changelog

Changelog.md

@@ -1,12 +1,18 @@
 ## 0.4.0
+* new `convert_tree` data import function is slightly more general than the old `convert_nest`
 * layout engines are proper objects. all layout parameters are moved to the layout objects and
   deprecated on the diagram object
 * `cola`, `dagre`, `tree` `_layout` are the current layout engines, and it should be possible to
   plug in others without modifying dc.graph.js
+* [graphviz_attrs](http://dc-js.github.io/dc.graph.js/docs/html/graphviz_attrs.html) is the "base
+  class" for layout engines that want to support the
+  [common attributes of graphviz](http://www.graphviz.org/doc/info/attrs.html). currently these are
+  just `rankdir` and `ranksep`.
 * using a webworker is optional for layout engines - wrap an engine in `webworker_layout` to use it
   with a webworker. the only restriction is that all layout parameters must be serializable - so for
   example the tree layout is not currently webworkable because it takes a bunch of functions.
-* [HTML documentation](http://dc-js.github.io/dc.graph.js/docs/html/)
+* there is spiffy [HTML documentation](http://dc-js.github.io/dc.graph.js/docs/html/), although not
+  everything in the API is documented yet.
 
 ## 0.3.16
 * line breaking `dc.line_breaks` function, for `nodeLabel` (which has supported returning an array