Allow leading dot for domain (#174) #183

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Job	Run time
test (Node.js 0.6)	2m 30s
test (Node.js 0.8)	11s
test (Node.js 0.10)	20s
test (Node.js 0.12)	21s
test (io.js 1.x)	19s
test (io.js 2.x)	17s
test (io.js 3.x)	16s
test (Node.js 4.x)	21s
test (Node.js 5.x)	23s
test (Node.js 6.x)	33s
test (Node.js 7.x)	32s
test (Node.js 8.x)	34s
test (Node.js 9.x)	33s
test (Node.js 10.x)	26s
test (Node.js 11.x)	22s
test (Node.js 12.x)	20s
test (Node.js 13.x)	25s
test (Node.js 14.x)	19s
test (Node.js 15.x)	17s
test (Node.js 16.x)	20s
test (Node.js 17.x)	21s
test (Node.js 18.x)	21s
test (Node.js 19.x)	19s
test (Node.js 20.x)	17s
test (Node.js 21.x)	20s
coverage	4s
	11m 21s