added event handling to tutorial

svn path=/trunk/matplotlib/; revision=471

Author: jdh2358

API_CHANGES

@@ -1,4 +1,10 @@
-API CHANGES in matplotlib-0.xx
+API CHANGES in matplotlib-0.61
+
+  canvas.connect is now deprecated for event handling.  use
+  mpl_connect and mpl_disconnect instead.  The callback signature is
+  func(event) rather than func(widget, evet)
+
+API CHANGES in matplotlib-0.60
 
 ColormapJet and Grayscale are deprecated.  For backwards
 compatibility, they can be obtained either by doing

TODO

@@ -505,7 +505,7 @@ Traceback (most recent call last):
 ZeroDivisionError: SeparableTransformation::eval_scalars yin interval is zero; cannot transform
 
 
--- some backends (ps and svg) appear to layout legend_demo2 text
+-- DONE some backends (ps and svg) appear to layout legend_demo2 text
    improperly
 
 -- DONE text colors for svg
@@ -521,4 +521,6 @@ ZeroDivisionError: SeparableTransformation::eval_scalars yin interval is zero; c
 
 -- blit on gtkagg after print is whacked
 
--- investigate matfile inclusion
+-- investigate matfile inclusion
+
+-- offset ps and svg text by max descender