Add many authors

Whoops, haven't been keeping up with this.

Lots of new names!  Hooray!
Remove urls from AUTHORS file

Email address is enough.
License: Artistic-2.0

The 'MIT +no-false-attribs' license was a hacked jury-rigged thing
that half-does what the Artistic-2.0 does much better.
Authors: add gflarity's email address
cache: Never be strict (for now)
v1.3.6
doc: Remove registry redirect stuff

This hasn't worked for a loooonnng time.  It's a hazard to have
in the docs and on th website.
doc: fix typo
doc: Correct links in README
Avoid assert in Node v0.11 by touching internal API
init-package-json@0.0.11
Bump all deps
v1.3.7
styling in LICENSE file
doc: Correct links to semver(7)
doc: Remove whitespace
Treat dep. as outdated if its _from changes

This is per Isaacs comment in #1727
use getCacheStat before lock, fixes joyent/node#3821

Previous code did not handle the cache dir's permissions consistently.
If the first lock was done as sudo, the cache directory was not user
writable.
Removed the now unnecessary guard and collapsed the then function.
doc: Fix typo
Guard against falsey versions value.