It'll cause a warning message like this but asap 2.7 support is more important I thought.
/home/unasuke/src/github.com/akihikodaki/cld3-ruby/intermediate/lib/cld3.rb:81: warning: rb_safe_level will be removed in Ruby 3.0
/home/unasuke/src/github.com/akihikodaki/cld3-ruby/intermediate/lib/cld3.rb:81: warning: rb_safe_level will be removed in Ruby 3.0
Fix #22
It'll cause a warning message like this but asap 2.7 support is more important I thought.