language: node_js

sudo: false

node_js:
  - "6"
  - "10"

language: node_js

sudo: false

node_js:
  - "10"
  - "node"

Remove testing against node 6, test against dev
Remove testing against node 6, test against dev

We no longer support 6 in production, so
remove support travis builds for it.

Also re-add in node (dev version)  which was
previously removed in 22758bdad8d0, as it's
good to test against future versions of node.
