Bump puma from 3.11.2 to 3.11.4

[dependabot-preview]

Bumps puma from 3.11.2 to 3.11.4.

Changelog

Sourced from puma's changelog.

3.11.4 / 2018-04-12

• 2 features:
  • Manage puma as a service using rc.d (#1529)
  • Server stats are now available from a top level method (#1532)
• 5 bugfixes:
  • Fix parsing CLI options (#1482)
  • Order of stderr and stdout is made before redirecting to a log file (#1511)
  • Init.d fix of ps -p to check if pid exists (#1545)
  • Early hints bugfix (#1550)
  • Purge interrupt queue when closing socket fails (#1553)

3.11.3 / 2018-03-05

• 3 bugfixes:
  • Add closed? to MiniSSL::Socket for use in reactor (#1510)
  • Handle EOFError at the toplevel of the server threads (#1524) (#1507)
  • Deal with zero sized bodies when using SSL (#1483)

Commits

• e1865c2 v 3.11.4
• 5fb2df9 Purge interrupt queue when closing socket fails (#1553)
• 342661f Use Ruby 2.2.9 on Travis again (#1552)
• 1a13e6c Use correct var in early hints (#1550)
• 9aea96e ps -p will check correctly whether $PID exists (#1545)
• 286cb05 Add warning about init.d being replaced by systemd (#1533)
• a4c7648 Merge pull request #1546 from schneems/schneems/require-puma-in-handler
• 2dfad76 Ensure Puma.stats_object available using handler
• 429d17b Merge pull request #1532 from schneems/schneems/puma-stats
• ad6a322 Merge branch 'master' into schneems/puma-stats
• Additional commits viewable in compare view

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