January 6, 2011.
This is no longer the newest version, version 3.1.1 is the newest.
Changes from 2.3 are:
Can now rotate a label freely.
For the Text command, can now rotate the label counter clockwise or clockwise. Before it was only CCW.
Tweaked the Stock command. Now the width of each stock defaults to a day, but you can specify the width exactly in units or pixels. Can also specify a mask to make it easier to draw a sub-set of the data.
The space for the x and y numbers moved from the Canvas settings into the axis settings. That means that now you can use different spaces for different axes when you stack/join them. There is also a space setting menu in the Extra Axis command.
The command group entry now has a new feature that is useful for animations, and that is conditional drawing. You can specify a logical expression for when the group of commands should be visible or excluded. This means for example that you can reveal or hide a particular sub-set of the graphic at a point in the animation. For example if you want something to be displayed only between t equals 10 and 20 you specify (t<10) || (t>20), and then it is hidden if t<10 or if t>20.
More LaTeX commands:
\rightarrow, \gets, \leftarrow, \Leftarrow, \Rightarrow, \leftrightarrow, \Leftrightarrow, \mapsto, \hookleftarrow, \leftharpoonup, \leftarpoondown, \rightleftharpoons, \leadsto, \longleftarrow, \Longleftarrow, \longrightarrow, \Longrightarrow, \longleftrightarrow \Longleftrightarrow, \longmapsto, \hookrightarrow, \rightharpoonup, \rightharpoondown, \leadsto, \uparrow, \downarrow, \Uparrow, \Downarrow, \updownarrow, \Updownarrow, \nearrow, \searrow, \nwarrow, \swarrow, \cdot, \cdots, \ldots, \ddots, \ast, \dagger, \ddagger, \cap, \cup
A few bug fixes and layout tweaks.