inktool fix, linemode duration adj

inktool was missing barrel rotation
linemode was using a duration of 0.001,
which renders lines as if they were drawn
insanely fast.  We should add a control
to vary this, but for now I made it
one second in duration.

gui/inktool.py

@@ -811,6 +811,7 @@ def insert_node(self, i):
             time=(cn.time + nn.time) / 2.0,
             viewzoom=(cn.viewzoom + nn.viewzoom) / 2.0,
             viewrotation=(cn.viewrotation + nn.viewrotation) / 2.0,
+            barrel_rotation=(cn.barrel_rotation + nn.barrel_rotation) / 2.0,
         )
         self.nodes.insert(i + 1, newnode)
 

gui/linemode.py

@@ -673,7 +673,8 @@ def draw_curve_2(self, cx, cy, sx, sy, ex, ey, kx, ky):
             self._stroke_to(px, py, pressure)
 
     def _stroke_to(self, x, y, pressure):
-        duration = 0.001
+        # FIXME add control for time, similar to inktool
+        duration = 1.0
 
         self.stroke_to(self.model, duration, x, y, pressure, 0.0, 0.0,
                        self.doc.tdw.scale, self.doc.tdw.rotation, 0.0,