CoinApiDataReader updates
CoinApiDataReader updates

- Use IEnumerable<Tick> instead of List<Tick> to reduce memory usage
- Filter out quotes with unchanged bid/ask prices

StefanoRaggi/Lean,JKarathiya/Lean,QuantConnect/Lean,StefanoRaggi/Lean,jameschch/Lean,jameschch/Lean,AlexCatarino/Lean,QuantConnect/Lean,AlexCatarino/Lean,jameschch/Lean,QuantConnect/Lean,jameschch/Lean,JKarathiya/Lean,JKarathiya/Lean,StefanoRaggi/Lean,QuantConnect/Lean,StefanoRaggi/Lean,JKarathiya/Lean,jameschch/Lean,StefanoRaggi/Lean,AlexCatarino/Lean,AlexCatarino/Lean