Expose splits and dividend events

[aktau]

Hi, according to the docs (https://www.alphavantage.co/documentation/#dailyadj), example: https://www.alphavantage.co/query?function=TIME_SERIES_DAILY_ADJUSTED&symbol=MSFT&apikey=demo, when using TIME_SERIES_DAILY_ADJUSTED instead of TIME_SERIES_DAILY, we get two extra fields:

• dividend amount
• split coefficient

I'd be interested in the dividend amount. I think it would be possible to check if s in

func parseTimeSeriesRecord(s []string) (*TimeSeriesValue, error) {
  // ...
}

Has more than 6 fields, and to expose them too.

Thanks for the library!

[curtismckee]

@aktau Thanks Aktau! It hasn't been actively maintained in the past 6 months but I will be starting to make it a fully fledged Alpha Vantage Go client that I maintain. I have a similar PR submitted for the split coefficient. In the next week or so Ill be taking a look at the repo and updating it. Be patient with me.