refresh

See #534, release log:

• f92569e by @yegor256: #534 sonar removed
• f48be47 by @yegor256: #534 protect /shutdown
• 513ea76 by @yegor256: #534 1 minute
• b0dccb8 by @yegor256: #534 /shutdown
• 1a82b30 by @yegor256: #534 shutdown
• 19c2214 by @yegor256: #534 rultor up
• c7635de by @yegor256: #534 year up
• 7c85f5b by @yegor256: #534 --help works
• 39f29c5 by @yegor256: #534 up
• 65388d2 by @yegor256: full ping script

Released by Rultor 2.0-SNAPSHOT, see build log