* Upgrade to node 4.8.5, 6.11.5, and 8.8.0 with yarn 1.21
To fix DOS security vulnerability, October 2017 https://nodejs.org/en/blog/vulnerability/oct-2017-dos/
* Lets not upgrade yarn for 4.8 and 6.11
* Revert "Lets not upgrade yarn for 4.8 and 6.11"
This reverts commit 1969c46bc0.
* Update generate-stackbrew-library
* Empty commit to trigger rebuild