Bump python-dateutil from 2.6.0 to 2.8.0

[dependabot-preview]

Bumps python-dateutil from 2.6.0 to 2.8.0.

Release notes

Sourced from python-dateutil's releases.

Version 2.7.5 (2018-10-27)

Data updates

• Update tzdata to 2018g

Version 2.7.4 (2018-10-24)

Data updates

• Updated tzdata version to 2018f.

Version 2.7.3 (2018-05-09)

Data updates

• Update tzdata to 2018e. (gh pr #710)

Bugfixes

• Fixed an issue where decimal.Decimal would cast NaN or infinite value in a
  parser.parse, which will raise decimal.Decimal-specific errors. Reported and
  fixed by @​amureki (gh issue #662, gh pr #679).
• Fixed a ValueError being thrown if tzinfos call explicity returns None.
  Reported by @​pganssle (gh issue #661) Fixed by @​parsethis (gh pr #681)
• Fixed incorrect parsing of certain dates earlier than 100 AD when repesented
  in the form "%B.%Y.%d", e.g. "December.0031.30". (gh issue #687, pr #700)
• Fixed a bug where automatically generated DTSTART was naive even if a
  specified UNTIL had a time zone. Automatically generated DTSTART will now
  take on the timezone of an UNTIL date, if provided. Reported by @​href (gh
  issue #652). Fixed by @​absreim (gh pr #693).

Documentation changes

• Corrected link syntax and updated URL to https for ISO year week number
  notation in relativedelta examples. (gh issue #670, pr #711)
• Add doctest examples to tzfile documentation. Done by @​weatherpattern and
  @​pganssle (gh pr #671)
• Updated the documentation for relativedelta. Removed references to tuple
  arguments for weekday, explained effect of weekday(_, 1) and better explained
  the order of operations that relativedelta applies. Fixed by @​kvn219
  @​huangy22 and @​ElliotJH (gh pr #673)
• Added changelog to documentation. (gh issue #692, gh pr #707)
• Changed order of keywords in rrule docstring. Reported and fixed by
  @​rmahajan14 (gh issue #686, gh pr #695).
• Added documentation for dateutil.tz.gettz. Reported by @​pganssle (gh

... (truncated)

Changelog

Sourced from python-dateutil's changelog.

Commits

• 3ebfbe8 Merge pull request #864 from pganssle/release_2.8.0
• 8e601bd Update NEWS file for version 2.8.0
• 57659e8 Move changelog for 582
• 6db5a27 Merge pull request #863 from pganssle/add_pep517
• 0519110 Add changelog for pyproject.toml changes (#863)
• 23f127f Add pyproject.toml to sdist
• c337b84 Explicitly add PEP 517 backend to pyproject.toml
• 9b9d84d Merge pull request #859 from nicoe/exdate-params
• 3997259 Add Nicolas Évrard to AUTHORS.md
• c3f4a0e Add news fragment for PR #859
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #44.