Update bitcoin_hashes to 1.0 #746

Job	Run time
Bench - nightly toolchain	2m 29s
Test - stable toolchain (recent)	6m 45s
Check WASM	28s
Lint - nightly toolchain	1m 36s
Docs - stable toolchain	3m 9s
Cross test	2m 7s
Test 32-bit version	1m 34s
Test - nightly toolchain (recent)	7m 10s
Docs - nightly toolchain	1m 52s
Test - msrv toolchain (recent)	1m 24s
	28m 34s

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