make widgets identical to their data definitions

luigi/widget/sash.lua

@@ -22,9 +22,9 @@ return function (self)
                     nextSibling[dimension] - event[axis])
         end
 
-        prevSibling:reflow()
-        nextSibling:reflow()
-        self:reflow()
+        prevSibling:reshape()
+        nextSibling:reshape()
+        self:reshape()
     end)
 
 end

luigi/widget/slider.lua

@@ -24,7 +24,7 @@ return function (self)
         self.value = (event.x - x1) / (x2 - x1)
         if self.value < 0 then self.value = 0 end
         if self.value > 1 then self.value = 1 end
-        self:reflow()
+        self:reshape()
     end
 
     self:onPressStart(press)