Mon, 19 Aug 2019 21:17:18 +0300 alfadur only digest masks for masked land object
Mon, 19 Aug 2019 18:59:24 +0300 alfadur remove per line digest logging
Mon, 19 Aug 2019 18:48:11 +0300 alfadur copy alpha extraction to the other digest computation
Mon, 19 Aug 2019 11:41:59 -0400 nemo make the mask colours more liberal due to possibility that OSX/SDL2 are slightly distorting them
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