040000 tree 288b7be0b954759d08b16c643b7e5bd31d476ecb	alpha_test
040000 tree 4aac63a890e6b49da8161566a55c40e39039549b	beta_test
100644 blob 60727e62ec4b3b2bb4854069a6e7b914e92d85c1	skerr.go
100644 blob b4b8b1df2359d5d5e08bb84c6b34adf07b31d3cd	skerr_test.go