0pdd answers with 404

See #261, release log:

• c08e817 by @rultor: Merge branch '__rultor'
• 0a6c979 by @yegor256: #262 copyright
• 5172ecb by @Serranya: Fix and test #261
• a18563e by @yegor256: #262 gem fix
• 1916472 by @yegor256: #262 rake off
• 510f2e6 by @yegor256: #262 dep
• da47a1f by @yegor256: #262 rubocop up
• ac4f08a by @yegor256: #262 ruby fixed

Released by Rultor 1.68.1, see build log