Hiroshi SHIBATA 1d637b1f5e [ruby/weakref] Use Gemfile instead of Gem::Specification#add_development_dependency. ... https://github.com/ruby/weakref/commit/10d547ba12		2020-08-03 19:46:39 +09:00
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weakref.gemspec	[ruby/weakref] Use Gemfile instead of Gem::Specification#add_development_dependency.	2020-08-03 19:46:39 +09:00