fix(deps): update dependency commander to v2.20.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
commander	dependencies	minor	2.15.1 -> 2.20.3

---

Release Notes

tj/commander.js

v2.20.3

Compare Source

Ran "npm unpublish [email protected]". There is no 2.20.2.

Fixed

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

v2.20.1

Compare Source

Fixed

• Improve tracking of executable subcommands.

Changed

• update development dependencies

v2.20.0

Compare Source

• 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

Compare Source

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

v2.18.0

Compare Source

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

v2.17.1

Compare Source

• Fix bug in command emit (#​844)

v2.17.0

Compare Source

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

v2.16.0

Compare Source

• 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)

---

Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

Newsflash: Renovate has joined WhiteSource, and is now free for all use. Learn more or view updated terms and privacy policies.