Update to 0.8.1:

2013-03-30   0.8.1:
-------------------
  * fix issue #10, i.e. int(bitarray()) segfault
  * added tests for using a bitarray object as an argument to functions
    like int, long (on Python 2), float, list, tuple, dict


2012-04-04   0.8.0:
-------------------
  * add Python 2.4 support
  * add (module level) function bitdiff for calculating the difference
    between two bitarrays


2012-02-15   0.7.0:
-------------------
  * add iterdecode method (C level), which returns an iterator but is
    otherwise like the decode method
  * improve memory efficiency and speed of pickling large bitarray objects


2012-02-06   0.6.0:
-------------------
  * add buffer protocol to bitarray objects (Python 2.7 only)
  * allow slice assignment to 0 or 1, e.g. a[::3] = 0  (in addition to
    booleans)
  * moved implementation of itersearch method to C level (Lluis Pamies)
  * search, itersearch now only except bitarray objects,
    whereas __contains__ excepts either booleans or bitarrays
  * use a priority queue for Huffman tree example (thanks to Ushma Bhatt)
  * improve documentation


2012-02-02   0.5.2:
-------------------
  * fixed MSVC compile error on Python 3 (thanks to Chris Gohlke)
  * add missing start and stop optional parameters to index() method
  * add examples/compress.py


2012-01-31   0.5.1:
-------------------
  * update documentation to use tobytes and frombytes, rather than tostring
    and fromstring (which are now deprecated)
  * simplified how tests are run


2012-01-23   0.5.0:
-------------------
  * added itersearch method
  * added Bloom filter example
  * minor fixes in docstrings, added more tests


2011-12-29   0.4.0:
-------------------
  * porting to Python 3.x (Roland Puntaier)
  * introduced tobytes, frombytes (tostring, fromstring are now deprecated)
  * updated development status
  * added sieve prime number example
  * moved project to github: https://github.com/ilanschnell/bitarray