io-console has changed between 2.1.0 and 2.1.1  so it should be reflected in its version number.
merge revision(s) r48878: [Backport #9591]
io-console.gemspec: bump up * ext/io/console/io-console.gemspec: bump up to 0.4.3.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@50127 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Updated by vo.x (Vit Ondruch) about 5 years ago
This is still/again issue for Ruby 2.2. There are changes in io-console but its version does not reflect them. Could you please make the io-console versioning reliable and useful? Thanks
BTW this is concern for BigDecimal as well ...