add failing test, depends on npm-registry-mock 0.3.0

test for #3823
update/outdated: don't access missing package info

avoid null dereferences checking the status of a currently installed
package

Fixes #3820, a regression caused by #3798 and #3578
v1.3.10
graceful-fs@2.0.1
slide@1.1.5
read-installed@0.2.4
inherits@2.0.1
inherits-fixup
lockfile@0.4.2
npmconf@0.1.3
sha@1.2.3
node-gyp@0.10.10
lru-cache@2.3.1
request@2.27.0
v1.3.11
include devDependencies in outdated and update
dedupe: respect --tag
dedupe: more docs for tag, install and dedupe
document npm prune --production
Fix #3071: cache location documentation