Update dependency commander to ~2.20.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
commander	dependencies	minor	~2.0 -> ~2.20.0

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Release Notes

tj/commander.js

v2.20.3

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Ran "npm unpublish commander@2.20.2". There is no 2.20.2.

Fixed

• Support Node.js 0.10 (Revert #​1059)

v2.20.1

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Fixed

• Improve tracking of executable subcommands.

Changed

• update development dependencies

v2.20.0

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• fix: resolve symbolic links completely when hunting for subcommands (#​935)
• Update index.d.ts (#​930)
• Update Readme.md (#​924)
• Remove --save option as it isn't required anymore (#​918)
• Add link to the license file (#​900)
• Added example of receiving args from options (#​858)
• Added missing semicolon (#​882)
• Add extension to .eslintrc (#​876)

v2.19.0

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• Removed newline after Options and Commands headers (#​864)
• Bugfix - Error output (#​862)
• Fix to change default value to string (#​856)

v2.18.0

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• Standardize help output (#​853)
• chmod 644 travis.yml (#​851)
• add support for execute typescript subcommand via ts-node (#​849)

v2.17.1

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• Fix bug in command emit (#​844)

v2.17.0

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• fixed newline output after help information (#​833)
• Fix to emit the action even without command (#​778)
• npm update (#​823)

v2.16.0

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• Remove Makefile and test/run (#​821)
• Make 'npm test' run on Windows (#​820)
• Add badge to display install size (#​807)
• chore: cache node_modules (#​814)
• chore: remove Node.js 4 (EOL), add Node.js 10 (#​813)
• fixed typo in readme (#​812)
• Fix types (#​804)
• Update eslint to resolve vulnerabilities in lodash (#​799)
• updated readme with custom event listeners. (#​791)
• fix tests (#​794)

v2.15.1

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fix #​777
Released with npm@5.6.0

v2.15.0

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

v2.14.1

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• Fix typing of help function

v2.14.0

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• 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

v2.13.0

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• 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

v2.12.2

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• fix: typings are not shipped

v2.12.1

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• Move @​types/node to dev dependency

v2.12.0

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• add attributeName() method to Option objects
• Documentation updated for options with --no prefix
• typings: outputHelp takes a string as the first parameter
• typings: use overloads
• feat(typings): update to match js api
• Print default value in option help
• Fix translation error
• Fail when using same command and alias (#​491)
• feat(typings): add help callback
• fix bug when description is add after command with options (#​662)
• Format js code
• Rename History.md to CHANGELOG.md (#​668)
• feat(typings): add typings to support TypeScript (#​646)
• use current node

v2.11.0

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• Fix help section order and padding (#​652)
• feature: support for signals to subcommands (#​632)
• Fixed #​37, --help should not display first (#​447)
• Fix translation errors. (#​570)
• Add package-lock.json
• Remove engines
• Upgrade package version
• Prefix events to prevent conflicts between commands and options (#​494)
• Removing dependency on graceful-readlink
• Support setting name in #name function and make it chainable
• Add .vscode directory to .gitignore (Visual Studio Code metadata)
• Updated link to ruby commander in readme files

v2.10.0

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• Update .travis.yml. drop support for older node.js versions.
• Fix require arguments in README.md
• On SemVer you do not start from 0.0.1
• Add missing semi colon in readme
• Add save param to npm install
• node v6 travis test
• Update Readme_zh-CN.md
• Allow literal '--' to be passed-through as an argument
• Test subcommand alias help
• link build badge to master branch
• Support the alias of Git style sub-command
• added keyword commander for better search result on npm
• Fix Sub-Subcommands
• test node.js stable
• Fixes TypeError when a command has an option called --description
• Update README.md to make it beginner friendly and elaborate on the difference between angled and square brackets.
• Add chinese Readme file

v2.9.0

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• Add option isDefault to set default subcommand #​415 @​Qix-
• Add callback to allow filtering or post-processing of help text #​434 @​djulien
• Fix undefined text in help information close #​414 #​416 @​zhiyelee

v2.8.1

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• Back out support multiline description Close #​396 #​397

v2.8.0

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• Add process.execArg support, execution args like --harmony will be passed to sub-commands #​387 @​DigitalIO @​zhiyelee
• Fix bug in Git-style sub-commands #​372 @​zhiyelee
• Allow commands to be hidden from help #​383 @​tonylukasavage
• When git-style sub-commands are in use, yet none are called, display help #​382 @​claylo
• Add ability to specify arguments syntax for top-level command #​258 @​rrthomas
• Support multiline descriptions #​208 @​zxqfox

v2.7.1

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• Revert #​347 (fix collisions when option and first arg have same name) which causes a bug in #​367.

v2.7.0

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• Fix git-style bug when installed globally. Close #​335 #​349 @​zhiyelee
• Fix collisions when option and first arg have same name. Close #​346 #​347 @​tonylukasavage
• Add support for camelCase on opts(). Close #​353 @​nkzawa
• Add node.js 0.12 and io.js to travis.yml
• Allow RegEx options. #​337 @​palanik
• Fixes exit code when sub-command failing. Close #​260 #​332 @​pirelenito
• git-style bin files in $PATH make sense. Close #​196 #​327 @​zhiyelee

v2.6.0

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• added Command#allowUnknownOption method. Close #​138 #​318 @​doozr @​zhiyelee
• Add application description to the help msg. Close #​112 @​dalssoft

v2.5.1

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• fixed two bugs incurred by variadic arguments. Close #​291 @​Quentin01 #​302 @​zhiyelee

v2.5.0

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• add support for variadic arguments. Closes #​277 @​whitlockjc

v2.4.0

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• fixed a bug on executing the coercion function of subcommands option. Closes #​270
• added Command.prototype.name to retrieve command name. Closes #​264 #​266 @​tonylukasavage
• added Command.prototype.opts to retrieve all the options as a simple object of key-value pairs. Closes #​262 @​tonylukasavage
• fixed a bug on subcommand name. Closes #​248 @​jonathandelgado
• fixed function normalize doesn’t honor option terminator. Closes #​216 @​abbr

v2.3.0

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• add command alias'. Closes PR #​210
• fix: Typos. Closes #​99
• fix: Unused fs module. Closes #​217

v2.2.0

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• add passing of previous option value
• fix: support subcommands on windows. Closes #​142
• Now the defaultValue passed as the second argument of the coercion function.

v2.1.0

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• add: allow cflag style option params, unit test, fixes #​174

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