Update to 1.50
    
    - New upstream release 1.50
      - New modules: CurrencyRates
      - Updated modules: ASX, TIAA-CREF, Fool, Currencies
      - Corrected some POD issues (thanks to the Debian Perl Group)
    - Add patch to fix FTBFS due to online test (GH#177)
    - Use %license unconditionally