// start by reading data from CSV
        var rawPoints:[(date: Date, value: Double)] = []
        
        let file = "AAPL 1980-12-12 to 2017-10-13.csv"
        
        let basePath = Bundle.main.resourceURL
        let fileURL = basePath?.appendingPathComponent(file)
        
        let formatter = ISO8601DateFormatter()
        formatter.formatOptions = [.withFullDate, .withDashSeparatorInDate]
        
        do {
            let text = try String(contentsOf: fileURL!, encoding: .utf8)
            let lines = text.split(separator: "\n")
            for line in lines {
                let values = line.split(separator: ";")
                
                if values.count != 2 {
                    continue
                }
                
                let dateString = values[0]
                let valueString = values[1]
                
                let date = formatter.date(from: String(dateString))
                let value = Double(valueString)
                
                if let date = date, let value = value {
                    rawPoints.append((date, value))
                }
            }
        }
        catch {
            /* error handling here */
        }
        
        // Ok, now let's rebase from first date
        //let firstDate = rawPoints[0].date
        
        var points:[StockPoint] = []
        var numPoints = 0.0
        
        for point in rawPoints {
            points.append(StockPoint(
                //when: point.date.timeIntervalSince(firstDate) / (24*60*60),
                when: numPoints,
                value: point.value
            ))
            
            numPoints += 1
        }
        
        self.points = points