Release 15.10.47

• Upgrade prettier 1.19.1 -> 2.0.1 (c4dd2ec)
• Update prettier to new version (7b8fe94)
• Update lock file (1ddbec6)
• Upgrade @ehmicky/dev-tasks 0.31.11 -> 0.31.12 (a57952e)
• Update mkdirp (695ca2e)
• Use new rule (20b6109)
• Upgrade eslint-config-standard 14.1.0 -> 14.1.1 (e8076da)
• Update minimist (06664e1)
• Upgrade @ehmicky/dev-tasks 0.31.10 -> 0.31.11 (ee58472)
• Upgrade @ehmicky/dev-tasks 0.31.9 -> 0.31.10 (f39aabe)