Support filter / search / sort in the populate

[chintanshahts]

mongoose populate with sort

WizardModel.find({})
.populate({
path: 'spells',
options: { sort: [['damages', 'asc']] }
})

mongoose populate with match

WizardModel.find({})
.populate({
path: 'spells',
match: { level_required: { $gte: 3 } }
})

[chintanshahts]

@leodinas-hao any planning on this?