Drop support for EOL Ruby versions #786
Merged
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Background:
Ruby 2.3, 2.4 are both EOL'd. That takes JRuby 9.1 with it, too. Read more in Ruby Maintenance Branches.
Example of 2.5 "news":
https://blog.bigbinary.com/2017/10/24/ruby-2.5-allows-rescue-inside-do-end-blocks.html
Solution
required_ruby_version
to 2.5 in gemspec