Update to 1.52
    
    - New upstream release 1.52
      - Quote.pm: Fixed logic for FQ_LOAD_QUOTELET starting with "-defaults"
        (GH#197, GH#199)
      - AlphaVantage currency module: Don't recurse infinitely when exchange rate
        is less than .001 (GH#193)
      - Bourso.pm: Fixed data bug (GH#174, GH#194)
      - TSP.pm: Minor fix for URL used to retrieve data (GH#195); note: URL was
        changed after the PR was merged and the module remains in a non-working
        status
      - TesouroDireto.pm: New module for Brazilian's National Treasury public
        bonds (GH#198)
      - Bloomberg.pm: Update Bloomberg class names (GH#205), correct html parsing
        errors
      - MorningstarCH.pm: Re-enabled and fixed (GH#207)
      - ZA.pm: Change to return price from sharenet in major denomination (GH#208)
      - Changes to SourceForge project website HTML files
      - Add [Prereqs] to dist.ini (GH#215)