finish renaming MongooseQuery -> Query
improved error msg during doc.save()

New documents must have an _id before saving.

closes #1595
removed namedscope

never worked right. never documented.

closes #679, #642, #455, #379
some refactoring of Query.js
more History updates
docs; multi-mongos support
docs; NOTE about db safe options
docs; aggregation
Updated the landing page template

Now includes information about the unstable releases.
aggregation; geoNear -> near

consistency with Query builder
docs; aggregation
Updated Makefile to include build for unstable doc

now builds unstable documentation and puts it in docs/unstable
tests; better error msg
added; readPref support to aggregation builder
updated; driver to 1.3.13
docs; fixes
docs; fix aggregate links
docs;
Merge branch 'master' of github.com:LearnBoost/mongoose
Updated geoNear docs

added examples