Update pyflakes to 1.6.0

[pyup-bot]

There's a new version of pyflakes available. You are currently using 0.8.1. I have updated it to 1.6.0

These links might come in handy: PyPI | Changelog | Repo

Changelog

1.6.0

• Process function scope variable annotations for used names
• Find Python files without extensions by their shebang

1.5.0

• Enable support for PEP 526 annotated assignments

1.4.0

• Change formatting of ImportStarMessage to be consistent with other errors
• Support PEP 498 "f-strings"

1.3.0

• Fix PyPy2 Windows IntegrationTests
• Check for duplicate dictionary keys
• Fix TestMain tests on Windows
• Fix "continue" and "break" checks ignoring py3.5's "async for" loop

1.2.3

• Fix TypeError when processing relative imports

1.2.2

• Avoid traceback when exception is del-ed in except

1.2.1

• Fix false RedefinedWhileUnused for submodule imports

1.2.0

• Warn against reusing exception names after the except: block on Python 3
• Improve the error messages for imports

1.1.0

• Allow main() to accept arguments.
• Support matrix-multiplication operator
• Validate future imports
• Fix doctest scope testing
• Warn for tuple assertions which are always true
• Warn for "import *" not at module level on Python 3
• Catch many more kinds of SyntaxErrors
• Check PEP 498 f-strings
• (and a few more sundry bugfixes)

1.0.0

• Python 3.5 support. async/await statements in particular.
• Fix test_api.py on Windows.
• Eliminate a false UnusedImport warning when the name has been declared "global"

0.9.2

• Fix a traceback when a global is defined in one scope, and used in another.

0.9.1

• Update NEWS.txt to include 0.9.0, which had been forgotten.

0.9.0

• Exit gracefully, not with a traceback, on SIGINT and SIGPIPE.
• Fix incorrect report of undefined name when using lambda expressions in generator expressions.
• Don't crash on DOS line endings on Windows and Python 2.6.
• Don't report an undefined name if the 'del' which caused a name to become undefined is only conditionally executed.
• Properly handle differences in list comprehension scope in Python 3.
• Improve handling of edge cases around 'global' defined variables.
• Report an error for 'return' outside a function.

Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖

[codecov[bot]]

Codecov Report

Merging #71 into develop will not change coverage. The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop      #71   +/-   ##
========================================
  Coverage    91.59%   91.59%           
========================================
  Files           82       82           
  Lines         3475     3475           
  Branches       184      184           
========================================
  Hits          3183     3183           
  Misses         262      262           
  Partials        30       30

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