documentation error and feature request

A documentation error and suggestion for pildriver:

The online pildriver documentation
http://www.pythonware.com/library/pil/handbook/pildr
iver.htm
omits the float parameter in the sharpness method
description, and I 
would guess there are similar issues in lighten and others.

A feature request:
Currently you can resize to specific dimensions in
pildriver.  I 
frequently want a half size picture, whatever the original
size.   It 
would be good to be able to scale an image by a factor. 
That could be 
done directly with a variation on resize or an operator on a
size pair

scaleby <float:factor> <int>
<int:y>
which produces the dimensions scaled by factor and rounded
and converted 
back to int's

Thanks!  I love PIL.

-- 
  Andrew N. Harrington
  Computer Science Department      Undergraduate Program
Director
  Loyola University Chicago        http://www.cs.luc.edu/~anh

  512B Lewis Towers (office)       Office Phone:
312-915-7982
  Snail mail to Lewis Towers 416   Dept. Fax:   
312-915-7998
  820 North Michigan Avenue        aharrinluc.edu
  Chicago, Illinois 60611          

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