Py-dateutil

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- Fixed precision problem on conversion of decimal seconds to
microseconds, as reported by Skip Montanaro.

- Fixed bug in constructor of parser, and converted parser classes to
new-style classes. Original report and patch by Michael Elsdörfer.

- Initialize tzid and comps in tz.py, to prevent the code from ever
raising a NameError (even with broken files). Johan Dahlin suggested
the fix after a pyflakes run.

- Version is now published in dateutil.__version__, as requested
by Darren Dale.

- All code is compatible with new-style division.

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- Now tzfile will round timezones to full-minutes if necessary,
since Python's datetime doesn't support sub-minute offsets.
Thanks to Ilpo Nyyssönen for reporting the issue.

- Removed bare string exceptions, as reported and fixed by
Wilfredo Sánchez Vega.

- Fix bug in leap count parsing (reported and fixed by Eugene Oden).

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- Fixed rrule byyearday handling. Abramo Bagnara pointed out that
RFC2445 allows negative numbers.

- Fixed --prefix handling in setup.py (by Sidnei da Silva).

- Now tz.gettz() returns a tzlocal instance when not given any
arguments and no other timezone information is found.

- Updating timezone information to version 2005q.

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- Fixed parsing of XXhXXm formatted time after day/month/year
has been parsed.

- Added patch by Jeffrey Harris optimizing rrule.__contains__.

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- Fixed pickling of timezone types, as reported by
Andreas Köhler.

- Implemented internal timezone information with binary
timezone files [1]. datautil.tz.gettz() function will now
try to use the system timezone files, and fallback to
the internal versions. It's also possible to ask for
the internal versions directly by using
dateutil.zoneinfo.gettz().

- New tzwin timezone type, allowing access to Windows
internal timezones (contributed by Jeffrey Harris).

- Fixed parsing of unicode date strings.

- Accept parserinfo instances as the parser constructor
parameter, besides parserinfo (sub)classes.

- Changed weekday to spell the not-set n value as None
instead of 0.

- Fixed other reported bugs.

[1] http://www.twinsun.com/tz/tz-link.htm

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- Removed FREQ_ prefix from rrule frequency constants
WARNING: this breaks compatibility with previous versions.

- Fixed rrule.between() for cases where "after" is achieved
before even starting, as reported by Andreas Köhler.

- Fixed two digit zero-year parsing (such as 31-Dec-00), as
reported by Jim Abramson, and included test case for this.

- Sort exdate and rdate before iterating over them, so that
it's not necessary to sort them before adding to the rruleset,
as reported by Nicholas Piper.