test against "0.6.0"
Directory reorg:
- Move lib/ to engine/
- Move server/ into engine/server/
- Remove dead code
Reorganize build-engine-tree. Stop shipping History.md.
Fix tests
previous commit changed how packages are built, this matches it
manifest is 0.6.0
release json files end with .release.json now
fix bless-release.sh for *.release.json
allow you to run publish-release.sh from anywhere
use multiple arguments instead of comma-separation for test-packages

also, update its docs