v0.1.0

Added

• Swift library module AlphaVantage:
  • Partial implementation of Stock Time Series functions including
    TIME_SERIES_INTRADAY, TIME_SERIES_DAILY, and
    TIME_SERIES_DAILY_ADJUSTED.
• Command line executable:
  • Basic command line interface.
  • Command sav stock <intraday/daily/daily-adjusted> <symbol> [options]