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See #8, release log:

• e6e6551 by @yegor256: sign right
• acaf45d by @yegor256: tests
• 2e9a8f6 by @yegor256: pvtkey
• 35b4c45 by @yegor256: key decryption
• 6cef811 by @yegor256: Key
• 48a3e79 by @yegor256: refactor
• d73f9d1 by @yegor256: mistake
• 6b62145 by @yegor256: cases
• 0c9aa18 by @yegor256: issuer
• cf3562c by @yegor256: local init and send
• e96862b by @yegor256: typo
• 64b2fad by @yegor256: words
• 0e63b37 by @yegor256: typo
• bc3de9c by @yegor256: data explained
• c89f063 by @yegor256: typo
• 6b2dc64 by @yegor256: max
• c67c1a2 by @yegor256: data
• ecfe6a6 by @yegor256: more
• 2dc2ef9 by @yegor256: 2pc
• 723662d by @yegor256: amount
• and 13 more...

Released by Rultor 1.67, see build log