Update to 1.48
    
    - New upstream release 1.48
      - Alphavantage: Add a waiting mechanism to comply with alphavantage use terms
      - Alphavantage: Added support for several stock exchanges and currencies
      - Updated modules: Union, Deka, Indiamutual, ASX, Yahoojson, TSP, AEX, Fool
      - New modules: IEXTrading, MorningstarAU, MorningstarCH, IEXCloud
      - Yahoo: removed modules referring to yahoo API, which yahoo stopped
      - BUGFIX: 'use of uninitialized value' returned by perl could make gnucash
        fail when more than 15 quotes were requested
      - BUGFIX: MS Windows does not support %T in strftime call
      - Added new documentation files: Release.txt, Hackers-Guide,
        Modules-README.yml
      - We started moving known failing tests into TODO blocks
    - Fix FTfunds (CPAN RT#129586)