Add datetime_from_timestamp and timestamp_from_datetime
Clarify that datetimes are always naive
Add to_timezone function, clarify timezone-related things on timestamp functions
No more trailing >>>
Adding chdir context manager
Whoops, don't chdir twice
Add os_.chdir to README
Can 4 u haz ur comment style
add a deprecate decorator
rename deprecate -> deprecated
Merge pull request #20 from tlatsas/functools

add a deprecate decorator
Raise a ValueError if number_to_str number is negative

Otherwise we get into an infinite loop, and that's just a sad thing to happen.
Merge pull request #21 from wolever/patch-2

Raise a ValueError if number_to_str number is negative
Proposing a string_.format_int
Sillybilly bugfixen.
add deprecated decorator in Readme
Merge pull request #23 from tlatsas/readme

add deprecated decorator in Readme
Cast to unicode before unicoding things.
Fixing py3 compat...
Improving Py3 support.