Python-dateutils

==========================

Bugfixes
--------

- Fixed an issue with the setup script running in non-UTF-8 environment.
Reported and fixed by gergondet (gh pr 651)


Misc
----

- GH 655

===========================

Data updates
------------

- Updated tzdata version to 2018d.


Bugfixes
--------

- Fixed issue where parser.parse would occasionally raise
decimal.Decimal-specific error types rather than ValueError. Reported by
amureki (gh issue 632). Fixed by pganssle (gh pr 636).
- Improve error message when rrule's dtstart and until are not both naive or
both aware. Reported and fixed by ryanpetrello (gh issue 633, gh pr 634)


Misc
----

- GH 644, GH 648

=============
- Dropped support for Python 2.6 (gh pr 362 by jdufresne)
- Dropped support for Python 3.2 (gh pr 626)
- Updated zoneinfo file to 2018c (gh pr 616)
- Changed licensing scheme so all new contributions are dual licensed under
Apache 2.0 and BSD. (gh pr 542, issue 496)
- Added __all__ variable to the root package. Reported by tebriel
(gh issue 406), fixed by mariocj89 (gh pr 494)
- Added python_requires to setup.py so that pip will distribute the right
version of dateutil. Fixed by jakec-github (gh issue 537, pr 552)
- Added the utils submodule, for miscellaneous utilities.
- Added within_delta function to utils - added by justanr (gh issue 432,
gh pr 437)
- Added today function to utils (gh pr 474)
- Added default_tzinfo function to utils (gh pr 475), solving an issue
reported by nealmcb (gh issue 94)
- Added dedicated ISO 8601 parsing function isoparse (gh issue 424).
Initial implementation by pganssle in gh pr 489 and 622, with a
pre-release fix by kirit93 (gh issue 546, gh pr 573).
- Moved parser module into parser/_parser.py and officially deprecated the use
of several private functions and classes from that module. (gh pr 501, 515)
- Tweaked parser error message to include rejected string format, added by
pbiering (gh pr 300)
- Add support for parsing bytesarray, reported by uckelman (gh issue 417) and
fixed by uckelman and pganssle (gh pr 514)
- Started raising a warning when the parser finds a timezone string that it
cannot construct a tzinfo instance for (rather than succeeding with no
indication of an error). Reported and fixed by jbrockmendel (gh pr 540)
- Dropped the use of assert in the parser. Fixed by jbrockmendel (gh pr 502)
- Fixed to assertion logic in parser to support dates like '2015-15-May',
reported and fixed by jbrockmendel (gh pr 409)
- Fixed IndexError in parser on dates with trailing colons, reported and fixed
by jbrockmendel (gh pr 420)
- Fixed bug where hours were not validated, leading to improper parse. Reported
by heappro (gh pr 353), fixed by jbrockmendel (gh pr 482)
- Fixed problem parsing strings in %b-%Y-%d format. Reported and fixed by
jbrockmendel (gh pr 481)
- Fixed problem parsing strings in the %d%B%y format. Reported by asishm
(gh issue 360), fixed by jbrockmendel (gh pr 483)
- Fixed problem parsing certain unambiguous strings when year <99 (gh pr 510).
Reported by alexwlchan (gh issue 293).
- Fixed issue with parsing an unambiguous string representation of an ambiguous
datetime such that if possible the correct value for fold is set. Fixes
issue reported by JordonPhillips and pganssle (gh issue 318, 320,
gh pr 517)
- Fixed issue with improper rounding of fractional components. Reported by
dddmello (gh issue 427), fixed by m-dz (gh pr 570)
- Performance improvement to parser from removing certain min() calls. Reported
and fixed by jbrockmendel (gh pr 589)
- Significantly refactored parser code by jbrockmendel (gh prs 419, 436,
490, 498, 539) and pganssle (gh prs 435, 468)
- Implemented of __hash__ for relativedelta and weekday, reported and fixed
by mrigor (gh pr 389)
- Implemented __abs__ for relativedelta. Reported by binnisb and pferreir
(gh issue 350, pr 472)
- Fixed relativedelta.weeks property getter and setter to work for both
negative and positive values. Reported and fixed by souliane (gh issue 459,
pr 460)
- Fixed issue where passing whole number floats to the months or years
arguments of the relativedelta constructor would lead to errors during
addition. Reported by arouanet (gh pr 411), fixed by lkollar (gh pr 553)
- Added a pre-built tz.UTC object representing UTC (gh pr 497)
- Added a cache to tz.gettz so that by default it will return the same object
for identical inputs. This will change the semantics of certain operations
between datetimes constructed with tzinfo=tz.gettz(...). (gh pr 628)
- Changed the behavior of tz.tzutc to return a singleton (gh pr 497, 504)
- Changed the behavior of tz.tzoffset to return the same object when passed the
same inputs, with a corresponding performance improvement (gh pr 504)
- Changed the behavior of tz.tzstr to return the same object when passed the
same inputs. (gh pr 628)
- Added .instance alternate constructors for tz.tzoffset and tz.tzstr, to
allow the construction of a new instance if desired. (gh pr 628)
- Added the tz.gettz.nocache function to allow explicit retrieval of a new
instance of the relevant tzinfo. (gh pr 628)
- Expand definition of tz.tzlocal equality so that the local zone is allow
equality with tzoffset and tzutc. (gh pr 598)
- Deprecated the idiosyncratic tzstr format mentioned in several examples but
evidently designed exclusively for dateutil, and very likely not used by
any current users. (gh issue 595, gh pr 606)
- Added the tz.resolve_imaginary function, which generates a real date from
an imaginary one, if necessary. Implemented by Cheukting (gh issue 339,
gh pr 607)
- Fixed issue where the tz.tzstr constructor would erroneously succeed if
passed an invalid value for tzstr. Fixed by pablogsal (gh issue 259,
gh pr 581)
- Fixed issue with tz.gettz for TZ variables that start with a colon. Reported
and fixed by lapointexavier (gh pr 601)
- Added a lock to tz.tzical's cache. Reported and fixed by Unrud (gh pr 430)
- Fixed an issue with fold support on certain Python 3 implementations that
used the pre-3.6 pure Python implementation of datetime.replace, most
notably pypy3 (gh pr 446).
- Added support for VALUE=DATE-TIME for DTSTART in rrulestr. Reported by potuz
(gh issue 401) and fixed by Unrud (gh pr 429)
- Started enforcing that within VTIMEZONE, the VALUE parameter can only be
omitted or DATE-TIME, per RFC 5545. Reported by Unrud (gh pr 439)
- Added support for TZID parameter for DTSTART in rrulestr. Reported and
fixed by ryanpetrello (gh issue 614, gh pr 624)
- Added 'RRULE:' prefix to rrule strings generated by rrule.__str__, in
compliance with the RFC. Reported by AndrewPashkin (gh issue 86), fixed by
jarondl and mlorant (gh pr 450)
- Switched to setuptools_scm for version management, automatically calculating
a version number from the git metadata. Reported by jreback (gh issue 511),
implemented by Sulley38 (gh pr 564)
- Switched setup.py to use find_packages, and started testing against pip
installed versions of dateutil in CI. Fixed issue with parser import
discovered by jreback in pandas-dev/pandas18141. (gh issue 507, pr 509)
- Switched test suite to using pytest (gh pr 495)
- Switched CI over to use tox. Fixed by gaborbernat (gh pr 549)
- Added a test-only dependency on freezegun. (gh pr 474)
- Reduced number of CI builds on Appveyor. Fixed by kirit93 (gh issue 529,
gh pr 579)
- Made xfails strict by default, so that an xpass is a failure. (gh pr 567)
- Added a documentation generation stage to tox and CI. (gh pr 568)
- Added an explicit warning when running python setup.py explaining how to run
the test suites with pytest. Fixed by lkollar. (gh issue 544, gh pr 548)
- Added requirements-dev.txt for test dependency management (gh pr 499, 516)
- Fixed code coverage metrics to account for Windows builds (gh pr 526)
- Fixed code coverage metrics to NOT count xfails. Fixed by gaborbernat
(gh issue 519, gh pr 563)
- Style improvement to zoneinfo.tzfile that was confusing to static type
checkers. Reported and fixed by quodlibetor (gh pr 485)
- Several unused imports were removed by jdufresne. (gh pr 486)
- Switched ``isinstance(*, collections.Callable)`` to callable, which is available
on all supported Python versions. Implemented by jdufresne (gh pr 612)
- Added CONTRIBUTING.md (gh pr 533)
- Added AUTHORS.md (gh pr 542)
- Corrected setup.py metadata to reflect author vs. maintainer, (gh issue 477,
gh pr 538)
- Corrected README to reflect that tests are now run in pytest. Reported and
fixed by m-dz (gh issue 556, gh pr 557)
- Updated all references to RFC 2445 (iCalendar) to point to RFC 5545. Fixed
by mariocj89 (gh issue 543, gh pr 555)
- Corrected parse documentation to reflect proper integer offset units,
reported and fixed by abrugh (gh pr 458)
- Fixed dangling parenthesis in tzoffset documentation (gh pr 461)
- Started including the license file in wheels. Reported and fixed by
jdufresne (gh pr 476)
- Indentation fixes to parser docstring by jbrockmendel (gh pr 492)
- Moved many examples from the "examples" documentation into their appropriate
module documentation pages. Fixed by Tomasz-Kluczkowski and jakec-github
(gh pr 558, 561)
- Fixed documentation so that the parser.isoparse documentation displays.
Fixed by alexchamberlain (gh issue 545, gh pr 560)
- Refactored build and release sections and added setup instructions to
CONTRIBUTING. Reported and fixed by kynan (gh pr 562)
- Cleaned up various dead links in the documentation. (gh pr 602, 608, 618)

=============
- Updated zoneinfo file to 2017b. (gh pr 395)
- Added Python 3.6 to CI testing (gh pr 365)
- Removed duplicate test name that was preventing a test from being run.
Reported and fixed by jdufresne (gh pr 371)
- Fixed testing of folds and gaps, particularly on Windows (gh pr 392)
- Fixed deprecated escape characters in regular expressions. Reported by
nascheme and thierryba (gh issue 361), fixed by thierryba (gh pr 358)
- Many PEP8 style violations and other code smells were fixed by jdufresne
(gh prs 358, 363, 364, 366, 367, 368, 372, 374, 379, 380, 398)
- Improved performance of tzutc and tzoffset objects. (gh pr 391)
- Fixed issue with several time zone classes around DST transitions in any
zones with +0 standard offset (e.g. Europe/London) (gh issue 321, pr 390)
- Fixed issue with fuzzy parsing where tokens similar to AM/PM that are in the
end skipped were dropped in the fuzzy_with_tokens list. Reported and fixed
by jbrockmendel (gh pr 332).
- Fixed issue with parsing dates of the form X m YY. Reported by jbrockmendel.
(gh issue 333, pr 393)
- Added support for parser weekdays with less than 3 characters. Reported by
arcadefoam (gh issue 343), fixed by jonemo (gh pr 382)
- Fixed issue with the addition and subtraction of certain relativedeltas.
Reported and fixed by kootenpv (gh issue 346, pr 347)
- Fixed issue where the COUNT parameter of rrules was ignored if 0. Fixed by
mshenfield (gh pr 330), reported by vaultah (gh issue 329).
- Updated documentation to include the new tz methods. (gh pr 324)
- Update documentation to reflect that the parser can raise TypeError, reported
and fixed by tomchuk (gh issue 336, pr 337)
- Fixed an incorrect year in a parser doctest. Fixed by xlotlu (gh pr 357)
- Moved version information into _version.py and set up the versions more
granularly.

=============
- Added PEP-495-compatible methods to address ambiguous and imaginary dates in
time zones in a backwards-compatible way. Ambiguous dates and times can now
be safely represented by all dateutil time zones. Many thanks to Alexander
Belopolski (abalkin) and Tim Peters tim-one for their inputs on how to
address this. Original issues reported by Yupeng and zed (lP: 1390262,
gh issues 57, 112, 249, 284, 286, prs 127, 225, 248, 264, 302).
- Added new methods for working with ambiguous and imaginary dates to the tz
module. datetime_ambiguous() determines if a datetime is ambiguous for a given
zone and datetime_exists() determines if a datetime exists in a given zone.
This works for all fold-aware datetimes, not just those provided by dateutil.
(gh issue 253, gh pr 302)
- Fixed an issue where dst() in Portugal in 1996 was returning the wrong value
in tz.tzfile objects. Reported by abalkin (gh issue 128, pr 225)
- Fixed an issue where zoneinfo.ZoneInfoFile errors were not being properly
deep-copied. (gh issue 226, pr 225)
- Refactored tzwin and tzrange as a subclass of a common class, tzrangebase, as
there was substantial overlapping functionality. As part of this change,
tzrange and tzstr now expose a transitions() function, which returns the
DST on and off transitions for a given year. (gh issue 260, pr 302)
- Deprecated zoneinfo.gettz() due to confusion with tz.gettz(), in favor of
get() method of zoneinfo.ZoneInfoFile objects. (gh issue 11, pr 310)
- For non-character, non-stream arguments, parser.parse now raises TypeError
instead of AttributeError. (gh issues 171, 269, pr 247)
- Fixed an issue where tzfile objects were not properly handling dst() and
tzname() when attached to datetime.time objects. Reported by ovacephaloid.
(gh issue 292, pr 309)
- /usr/share/lib/zoneinfo was added to TZPATHS for compatibility with Solaris
systems. Reported by dhduvall (gh issue 276, pr 307)
- tzoffset and tzrange objects now accept either a number of seconds or a
datetime.timedelta() object wherever previously only a number of seconds was
allowed. (gh pr 264, 277)
- datetime.timedelta objects can now be added to relativedelta objects. Reported
and added by Alec Nikolas Reiter (justanr) (gh issue 282, pr 283
- Refactored relativedelta.weekday and rrule.weekday into a common base class
to reduce code duplication. (gh issue 140, pr 311)
- An issue where the WKST parameter was improperly rendering in str(rrule) was
reported and fixed by Daniel LePage (dplepage). (gh issue 262, pr 263)
- A replace() method has been added to rrule objects by jendas1, which creates
new rrule with modified attributes, analogous to datetime.replace (gh pr 167)
- Made some significant performance improvements to rrule objects in Python 2.x
(gh pr 245)
- All classes defining equality functions now return NotImplemented when
compared to unsupported classes, rather than raising TypeError, to allow other
classes to provide fallback support. (gh pr 236)
- Several classes have been marked as explicitly unhashable to maintain
identical behavior between Python 2 and 3. Submitted by Roy Williams
(rowillia) (gh pr 296)
- Trailing whitespace in easter.py has been removed. Submitted by OmgImAlexis
(gh pr 299)
- Windows-only batch files in build scripts had line endings switched to CRLF.
(gh pr 237)
- adamchainz updated the documentation links to reflect that the canonical
location for readthedocs links is now at .io, not .org. (gh pr 272)
- Made some changes to the CI and codecov to test against newer versions of
Python and pypy, and to adjust the code coverage requirements. For the moment,
full pypy3 compatibility is not supported until a new release is available,
due to upstream bugs in the old version affecting PEP-495 support.
(gh prs 265, 266, 304, 308)
- The full PGP signing key fingerprint was added to the README.md in favor of
the previously used long-id. Reported by valholl (gh issue 287, pr 304)
- Updated zoneinfo to 2016i. (gh issue 298, gh pr 306)

=============
- Updated zoneinfo to 2016d
- Fixed parser bug where unambiguous datetimes fail to parse when dayfirst is
set to true. (gh issue 233, pr 234)
- Bug in zoneinfo file on platforms such as Google App Engine which do not
do not allow importing of subprocess.check_call was reported and fixed by
savraj (gh issue 239, gh pr 240)
- Fixed incorrect version in documentation (gh issue 235, pr 243)