0.2.0

• Improved performance:

benchmark                 old ns/op     new ns/op     delta
BenchmarkPassphrase-4     6552          6057          -7.55%

benchmark                 old allocs     new allocs     delta
BenchmarkPassphrase-4     40             37             -7.50%

benchmark                 old bytes     new bytes     delta
BenchmarkPassphrase-4     1410          1266          -10.21%

0.1.0

First release. Support for basic diceware passphrases.