message: change version to 0.8.0
diff: @@ -5,8 +5,8 @@ define(_CLIENT_VERSION_MINOR, 16)
  define(_CLIENT_VERSION_REVISION, 3)
  define(_CLIENT_VERSION_BUILD, 0)
  define(_PEERCOIN_VERSION_MAJOR, 0)
  -define(_PEERCOIN_VERSION_MINOR, 16)
  -define(_PEERCOIN_VERSION_REVISION, 1)
  +define(_PEERCOIN_VERSION_MINOR, 8)
  +define(_PEERCOIN_VERSION_REVISION, 0)
  define(_PEERCOIN_VERSION_BUILD, 0)
  define(_CLIENT_VERSION_IS_RELEASE, false)
  define(_COPYRIGHT_YEAR, 2018)
  