Don't fail when used with npm3

Merge pull request #87 from matthew-andrews/looser-semver

Loosen the semver to cope with npm v3

Add node symlink when running iojs

Merge pull request #79 from matthew-andrews/iojs-fix

Make iojs work

Support worker processes

Merge pull request #80 from matthew-andrews/support-worker-processes

Support worker processes and scaling

Rollback previous attempt to fix bug

Merge pull request #78 from matthew-andrews/revert-77-depth-0-again

Revert "another solution for dev deps"

Another (simpler) fix for devDeps bug

Merge pull request #77 from matthew-andrews/depth-0-again

another solution for dev deps

Fix the devDeps problem without overloading stdout buffers

Merge pull request #76 from matthew-andrews/depth-0

Manually implement what *I* mean by --depth 0

*actually* don't ignore devDeps properly

Merge pull request #74 from matthew-andrews/no-depth

no depth to deal with dependencies that have been deduped

Make the devDependencies exclusion algorithm actually match npm's prune mechanism

Merge pull request #73 from matthew-andrews/pick-deps

Pick deps better

Error when user does not have permission to destroy apps

v1.13.1

Also throw on forbidden in destroy

Can now be devDependency; fix bug where `.haikro-cache` not properly excluded by gnu-tar; working directories no longer affected by haikro deploys

Merge pull request #66 from matthew-andrews/ignore-dev-deps

Ignore dev deps