Update eventmachine requirement from = 1.0.3 to = 1.2.7

[dependabot-preview]

Updates the requirements on eventmachine to permit the latest version.

Release notes

Sourced from eventmachine's releases.

1.2.7 (May 12, 2018)

• Fix segfault on large numbers of connections #843

Changelog

Sourced from eventmachine's changelog.

1.2.7 (May 12, 2018)

• Fix segfault on large numbers of connections #843

1.2.6 (April 30, 2018)

• Fix segfault when an Exception is raised from unbind callback (for real this time!)
• Fix race condition while initializing the machine #756
• Fix for newer compilers where bind() and std::bind() conflict [#830, #831]
• Be verbose about SSL connection errors #807
• Avoid explicitly calling class methods when in class scope
• Java: Add EM_PROTO_SSL/TLS definitions [#773, #791]
• Java: return zero when sending data to a closed connection [#475, #804]
• Pure Ruby: Connection::error? calls report_connection_error_status #801

1.2.5 (July 27, 2017)

• Java: Use long for larger values in oneshot timer intervals [#784, #794]

1.2.4 (July 27, 2017)

• Java: Add EM_PROTO_SSL/TLS definitions [#773, #791]
• Fix IPv6 UDP get_peername #788
• Allow for larger values in oneshot timer intervals [#784, #793]
• Update extconf.rb to allow MinGW builds with OpenSSL 1.1.0 #785

1.2.3 (February 22, 2017)

• Pure Ruby: Add get_sockname [#308, #772]
• Fix segfault when an Exception is raised from unbind callback [#765, #766]
• Allow destructors to throw when compiling in >= C++11 #767

1.2.2 (January 23, 2017)

• Java: Fix Fixnum deprecated warning in Ruby 2.4+ #759
• Fix uncaught C++ exception in file watcher and raise InvalidSignature [#512, #757]
• Fix connection count off-by-one for epoll and kqueue #750
• Fix uninitialized variable warning in EM::P::HttpClient #749
• Fix missing initial value for EventableDescriptor NextHeartbeat #748
• Fix hostname resolution on Solaris, Ilumos, SmartOS, et al [#745, #746]
• Improve reliability of tests, reduce public Internet accesses in tests [#656, #666, #749]

1.2.1 (November 15, 2016)

• Throw strerror(errno) when getsockname or getpeername fail #683
• Use a single concrete implementation of getpeername/getsockname, the rest pure virtuals #683
• Use gai_strerror to get the failure string from getaddrinfo #744
• Fix deregistering descriptor when using KQUEUE #728
• Fix to enable to work an example code in EM::Pool #731
• LineText2: Add regular expression delimiter support #706
• Pure Ruby: EM rescue ECONNREFUSED on initial TCP connect #741
• Pure Ruby: EM SSL (working start_tls) #712
• Pure Ruby: EM fixes #707
• Java: Use Acceptors to get peer and sock names if not present in Connections #743

1.2.0.1 (March 15, 2016)

• Fix crash when accepting IPv6 connections due to struct sockaddr_in [#698, #699]

... (truncated)

Commits

• 9cb13a8 Bump version to 1.2.7
• 8d1a6c5 Changelog for v1.2.7
• 3440de4 Fix crashes on large numbers of connections (#843)
• 159ad95 Merge pull request #839 from sodabrew/release-1.2.6
• 358a6d4 Bump version to 1.2.6
• 9ac300e Changelog for v1.2.6
• b3f2dc4 Travis CI test through Ruby 2.6
• acadd36 Remove using namespace std; and be explicit with std:: prefixes (#831)
• b18d8e2 Update badge URLs on README. (#813)
• 232e981 ssl: c++: be verbose about SSL connection errors (#807)
• Additional commits viewable in compare view

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