isArray shim for es<5
Object.keys shim
avoid importing util from node core
avoid debuglog
clean up style
Merge remote-tracking branch 'substack/isarray-object-keys'
Merge remote-tracking branch 'calvinmetcalf/rm-util'

Conflicts:
	build/files.js
	package.json
cleanup and organise
sync with v0.10 branch
fix for 0.11
rebuild
better 0.8 support