Bump future from 0.18.2 to 0.18.3

[dependabot]

Bumps future from 0.18.2 to 0.18.3.

Release notes

Sourced from future's releases.

v0.18.3

This is a minor bug-fix release containing a number of fixes:

• Backport fix for bpo-38804 (c91d70b)
• Fix bug in fix_print.py fixer (dffc579)
• Fix bug in fix_raise.py fixer (3401099)
• Fix newint bool in py3 (fe645ba)
• Fix bug in super() with metaclasses (6e27aac)
• docs: fix simple typo, reqest -> request (974eb1f)
• Correct eq (c780bf5)
• Pass if lint fails (2abe00d)
• Update docker image and parcel out to constant variable. Add comment to update version constant (45cf382)
• fix order (f96a219)
• Add flake8 to image (046ff18)
• Make lint.sh executable (58cc984)
• Add docker push to optimize CI (01e8440)
• Build System (42b3025)
• Add docs build status badge to README.md (3f40bd7)
• Use same docs requirements in tox (18ecc5a)
• Add docs/requirements.txt (5f9893f)
• Add PY37_PLUS, PY38_PLUS, and PY39_PLUS (bee0247)
• fix 2.6 test, better comment (ddedcb9)
• fix 2.6 test (3f1ff7e)
• remove nan test (4dbded1)
• include list test values (e3f1a12)
• fix other python2 test issues (c051026)
• fix missing subTest (f006cad)
• import from old imp library on older python versions (fc84fa8)
• replace fstrings with format for python 3.4,3.5 (4a687ea)
• minor style/spelling fixes (8302d8c)
• improve cmp function, add unittest (0d95a40)
• Pin typing==3.7.4.1 for Python 3.3 compatiblity (1a48f1b)
• Fix various py26 unit test failures (9ca5a14)
• Add initial contributing guide with docs build instruction (e55f915)
• Add docs building to tox.ini (3ee9e7f)
• Support NumPy's specialized int types in builtins.round (b4b54f0)
• Added r""" to the docstring to avoid warnings in python3 (5f94572)
• Add subclasscheck for past.types.basestring (c9bc0ff)
• Correct example in README (681e78c)
• Add simple documentation (6c6e3ae)
• Add pre-commit hooks (a9c6a37)
• Handling of next and next by future.utils.get_next was reversed (52b0ff9)
• Add a test for our fix (461d77e)
• Compare headers to correct definition of str (3eaa8fd)
• #322 Add support for negative ndigits in round; additionally, fixing a bug so that it handles passing in Decimal properly (a4911b9)
• Add tkFileDialog to future.movers.tkinter (f6a6549)
• Sort before comparing dicts in TestChainMap (6126997)
• Fix typo (4dfa099)
• Fix formatting in "What's new" (1663dfa)
• Fix typo (4236061)

... (truncated)

Commits

• af1db97 Merge pull request #613 from PythonCharmers/lwan/0.18.3-release
• 079ee9b Prepare for 0.18.3 release
• 02f7a81 Merge pull request #610 from wshanks/wshanks-patch-1
• c91d70b Backport fix for bpo-38804
• 80523f3 Merge pull request #569 from jmadler/master
• 5e5af71 Merge pull request #582 from r3m0t/patch-6
• 17e4bbd Merge pull request #596 from abjonnes/fix-print-trailing-comma
• 1b427ba Merge branch 'xZise-official-count' into master
• c8eb497 Merge branch 'official-count' of https://github.com/xZise/python-future into ...
• dffc579 Fix bug in fix_print.py fixer
• Additional commits viewable in compare view

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