ChainedFind.remove on relation with compound key incorrectly renders SQL

[Artazor]

I have relation with compound key: opts.id = ['a','b']
Trying to run models.MyRelation.find({a:1,b:2}).remove(function(err){ ... })
produces an error: column "a,b" does not exist
I'm using posgres (if it matters)

[dresende]

Fix in #345 should also fix this. Can you please test the master branch. It's working for me.