chore(deps): pin devdependencies

[renovate]

This Pull Request renovates the package group "Pin Dependencies".

• yarn: from ^1.2.1 to 1.3.2
• xo: from ^0.18.2 to 0.18.2
• prettier: from ^1.5.2 to 1.8.2
• npx: from ^9.6.0 to 9.7.1
• lint-staged: from ^4.0.1 to 4.3.0
• lerna: from ^2.5.1 to 2.5.1
• husky: from ^0.14.3 to 0.14.3
• eslint-config-prettier: from ^2.3.0 to 2.7.0
• eslint: from ^4.8.0 to 4.11.0
• docsify-cli: from ^4.1.8 to 4.1.12
• @​marionebl/sander: from ^0.6.1 to 0.6.1
• execa: from ^0.7.0 to 0.7.0
• cross-env: from ^5.0.1 to 5.1.1
• concurrently: from ^3.5.0 to 3.5.0
• babel-register: from ^6.26.0 to 6.26.0
• babel-cli: from ^6.26.0 to 6.26.0
• pkg-dir: from ^2.0.0 to 2.0.0
• babel-core: from ^6.26.0 to 6.26.0
• ava: from ^0.22.0 to 0.22.0
• throat: from ^4.1.0 to 4.1.0
• commitizen: from ^2.9.6 to 2.9.6
• meow: from ^3.7.0 to 3.7.0
• lodash: from ^4.5.1 to 4.17.4
• globby: from ^4.0.0 to 4.1.0
• import-from: from ^2.1.0 to 2.1.0
• string-to-stream: from ^1.1.0 to 1.1.0
• sander: from ^0.6.0 to 0.6.0
• rimraf: from ^2.6.2 to 2.6.2
• resolve-bin: from ^0.4.0 to 0.4.0
• mkdirp: from ^0.5.1 to 0.5.1
• dependency-check: from ^2.9.1 to 2.9.1
• get-stdin: from ^5.0.1 to 5.0.1
• chalk: from ^2.0.1 to 2.3.0
• babel-polyfill: from ^6.23.0 to 6.26.0
• resolve-pkg: from ^1.0.0 to 1.0.0
• read-pkg: from ^2.0.0 to 2.0.0

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This PR has been generated by Renovate Bot.