Bump rustc_version from 0.3.0 to 0.3.2

Created by: dependabot[bot]

Bumps rustc_version from 0.3.0 to 0.3.2.

Commits

• 7695dab Bump version again
• a4e2ff3 Bump version to 0.3.1
• 2ba693d Make parser more robust to input variations (fixes #11)
• eaf3035 Fix build status badge
• 92e72bc Link to other relevant crates
• 5597f65 Remove unnecessary main() wrapper from doctest
• c4b1120 Note MSRV in README
• 6332f55 Remove extern crate from example
• 241658e Merge errors module into crate root
• f4b8b68 Switch to 2018 edition
• Additional commits viewable in compare view

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