nestopia-1.50-bp156.3.9

- Update to version 1.50
  Additions:
  * Added ability to output data from homebrew module
  libretro:
  Additions:
    + Button shift option
    + Input bitmask support
    + Enhanced core options
    + Build in NstDatabase.xml
  Core:
  Additions:
    + Support for mapper 31
    + Support for mappers 28 and 30
    + Support for UNL-KS7031
    + Support for MMC3 Big CHR-RAM Board
  Fixes:
    + Deterministic Save States

- Fix license tag

- Initial package, version 1.49