simplified bson.reader and made it faster
simplified bson.reader and made it faster

erg/factor,erg/factor,mcandre/factor,erg/factor,kingcons/factor,erg/factor,ceninan/factor,erg/factor,mcandre/factor,ceninan/factor,mcandre/factor,ceninan/factor,mcandre/factor,kingcons/factor,ceninan/factor,mcandre/factor,mcandre/factor,kingcons/factor,kingcons/factor,erg/factor,erg/factor,mcandre/factor