Update dependency commander to v2.15.1

[renovate]

This Pull Request updates dependency commander from v2.12.2 to v2.15.1

Release Notes

v2.13.0

==================

• Do not print default for --no-
• remove trailing spaces in command help
• Update CI's Node.js to LTS and latest version
• typedefs: Command and Option types added to commander namespace

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v2.14.0

==================

• only register the option:version event once
• Fixes issue #727: Passing empty string for option on command is set to undefined
• enable eqeqeq rule
• resolves #754 add linter configuration to project
• resolves #560 respect custom name for version option
• document how to override the version flag
• document using options per command

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v2.14.1

==================

• Fix typing of help function

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v2.15.0

==================

• Update downloads badge to point to graph of downloads over time instead of duplicating link to npm
• Arguments description

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v2.15.1

fix #777
Released with npm@5.6.0

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Commits

v2.13.0

• d812171 Merge pull request #723 from abetomo/add_nodejs_version_to_ci_yml
• fefda77 Merge pull request #713 from sveinburne/feature/enhanced-typedefs
• ff712f1 remove trailing spaces in command help
• f13ee18 Do not print default for --no-
• 63f1ee9 version bump 2.13.0
• 291fbaa Merge pull request #748 from abetomo/version_bump_2.13.0

v2.14.0

• ac337d1 document using options per command
• 447ce8f Merge pull request #751 from mojavelinux/options-for-command
• 9cee324 document how to override the version flag
• e5d8f04 Merge pull request #752 from mojavelinux/document-version-flag
• 37359ee resolves #560 respect custom name for version option
• 4c9b4b8 resolves #754 add linter configuration to project
• cdb7a95 enable eqeqeq rule
• 38f41bf Merge pull request #760 from mojavelinux/enable-eqeqeq-rule
• d5ac793 Merge pull request #753 from mojavelinux/issue-560-version-option
• f44fa3b Add test for empty option on command
• 92d6e49 Check if argv is set in array, instead of checking falsey
• 06451e3 Add missing semi-colons for linting.
• f5abcdb Merge pull request #728 from sorohan/master
• ba6592f only register the option:version event once
• 445e80e Merge pull request #761 from mojavelinux/register-on-version-once
• de4af3a version bump 2.14.0

v2.14.1

• 689c0ea Fix typing of help function
• 6b026a5 version bump 2.14.1

v2.15.0

• 1d52048 Merge branch 'master' into args_description
• c92ca1d Merge pull request #711 from cravler/args_description
• 956b9e5 Update downloads badge to point to graph of downloads
• 5c880fc Merge pull request #772 from cheapsteak/patch-2
• cb6f680 version bump 2.15.0
• d8404f8 Merge pull request #775 from abetomo/version_bump_2.15.0

v2.15.1

• 649eaef 2.15.1

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