first attempt to create cache decorator
memcached in simple dictionary, proper decorator
proper memory caching in dictionary
locking and realesing threat for caching return value from function
lock acquired in with statement (implicit try...finally)
tests for caching get_data()
pep8
Merge pull request #6 from magul/bug_1454

Bug 1454
Merge branch 'master' into bug_1459
handling locale charset