Release 4.0.6 (stable)

[Valeri Karpov]

4.0.6 / 2015-06-21
==================
 * upgraded; node driver -> 2.0.34 #3087
 * fixed; apply setters on addToSet, etc #3067 [victorkohl](https://github.com/victorkohl)
 * fixed; missing semicolons #3065 [sokolikp](https://github.com/sokolikp)
 * fixed; proper handling for async doc hooks #3062 [gregthegeek](https://github.com/gregthegeek)
 * fixed; dont set failed populate field to null if other docs are successfully populated #3055 [eloytoro](https://github.com/eloytoro)
 * fixed; setDefaultsOnInsert with document arrays #3034 [taxilian](https://github.com/taxilian)
 * fixed; setters fired on array items #3032
 * fixed; stop validateSync() on first error #3025 [victorkohl](https://github.com/victorkohl)
 * docs; improve query docs #3016
 * fixed; always exclude _id when its deselected #3010
 * fixed; enum validator kind property #3009
 * fixed; mquery collection names #3005
 * docs; clarify mongos option #3000
 * docs; clarify that query builder has a .then() #2995
 * fixed; race condition in dynamic ref #2992

New Bugs
========

Please report any issues if they do not already exist:
https://github.com/learnboost/mongoose/issues/new

Release notes: https://github.com/LearnBoost/mongoose/wiki/4.0-Release-Notes
Migration guide: http://mongoosejs.com/docs/migration.html