bump to v0.6.0 refs

version v0.5.0 bump

bump patch version in docs

fail on image not found without panic; add extra chmod case to test d…

…ockerfile

ensure tmp image is cleaned up on crash (addresses part of wagoodman#58)

added efficiency test

keybindings belong to a specific view (fixes wagoodman#55)

use stable uuid def (closes wagoodman#31)

unaccounted whiteout files should not be fatal

support goreleaser driven docker build