Bump radon from 1.4.2 to 3.0.3

[dependabot-preview]

Bumps radon from 1.4.2 to 3.0.3.

Changelog

Sourced from radon's changelog.

3.0.1 (Feb 03, 2019)

• Automatically exclude binary files, instead of producing an error: #166

3.0.0 (Jan 26, 2019)

• Include files with no extension but a Python shebang (thanks @​hawkeyej): #155
• Fix calculation of total complexity for classes: #156
• Update Colorama dependency to avoid conflicts with pytest: #164
• Fix raw metrics, which were completely broken

2.4.0 (Oct 11, 2018)

• Add a __main__ module (thanks @​douardda): #153
• Add --output-file option (thanks @​douardda): #154

2.3.1 (Oct 02, 2018)

• Quickfix for Python 2.7
• Add official Python 3.7 support

2.3.0 (Oct 02, 2018)

• Add Halstead command and harvester (thanks @​rwbogl): #136
• Add --json, --exclude, --ignore to radon hal (thanks @​rwbogl): #138
• Add --functions to radon hal (thanks @​rwbogl): #147
• Add documentation for the radon hal subcommand (thanks @​rwbogl): #150

2.2.0 (Jan 11, 2018)

• Add an option to show closures when Radon is used from flake8: #135

2.1.1 (Sep 07, 2017)

• Fix critical bug in Python 2 that prevented analysis of files with no
  comments at the start of the module: #133

2.0.3 (Aug 30, 2017)

• Fix encoding issues for all commands: #115 and #127

2.0.2 (Jun 04, 2017)

... (truncated)

Commits

• 954dda3 chore(release): bump to v3.0.3
• 38a6271 chore(deps): add missing 'future' requirement (#173)
• 1292211 chore(release): bump to v3.0.2
• fb94658 fix(super): import Py3's super() for Py2 users (#172)
• 420cbe4 fix(readme): correct coala website URL (#168)
• 525afce chore(release): bump to v3.0.1
• e507f90 chore(changes): document changes to is_python_file
• 3b5d1f7 fix(tools): exclude binary files automatically instead of failing
• 72903d5 chore(release): bump to v3.0.0
• b0e9e2e chore(changes): update changelog
• Additional commits viewable in compare view

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