remove zuul coverage option which doesn't actually work

0.6.7

FIX key-cache destroys updates on multiWindow (#84)

bypass getItem on keys-only db streams (#78)

remove deprecated new Buffer() usage (#85)

Fix Saucelabs/Zuul tests (#83)

fix jshint

update zuul to latest

reduce time taken by chrome/ff tests

0.6.6

use "files" to reduce npm tarball size

pin zuul to 3.8.0

(#76) - fix localstorage destroy()

0.6.5

(#76) - correctly iterate when destroying