Crash: AttributeError: 'module' object has no attribute 'isNumberType'

The new python-imaging (1.1.7+2.0.0-1) now causes 'wsjt' (and surely other apps) to crash in Raring as shown below.
The problem does not happen with python-imaging (1.1.7-x) in Quantal or Debian unstable.

The problem has apparently been fixed in python-imaging upstream, per this thread, which links to the fix commit: http://lists.fedoraproject.org/pipermail/test/2013-March/114361.html

{wsjt crash with python-imaging (1.1.7+2.0.0-1)}:

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1473, in __call__
    return self.func(*args)
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 534, in callit
    func(*args)
  File "/usr/share/wsjt/WsjtMod/specjt.py", line 345, in update
    draw.line((0,0,749,0),fill=128) #Draw the minute separator
  File "/usr/lib/python2.7/dist-packages/PIL/ImageDraw.py", line 198, in line
    ink, fill = self._getink(fill)
  File "/usr/lib/python2.7/dist-packages/PIL/ImageDraw.py", line 144, in _getink
    if self.palette and not Image.isNumberType(ink):
AttributeError: 'module' object has no attribute 'isNumberType'

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: python-imaging 1.1.7+2.0.0-1
ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8
Uname: Linux 3.8.0-21-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
Date: Sun May 19 10:36:04 2013
InstallationDate: Installed on 2012-08-03 (289 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: python-imaging
UpgradeStatus: Upgraded to raring on 2013-04-26 (22 days ago)