Regenerate gemspec for version 14.5.0

Regenerate gemspec for version 14.3.0

Merge pull request automaticruby#100 from id774/master

Regenerate gemspec for version 14.2.0

Regenerate gemspec for version 14.1.0

Regenerate gemspec for version 13.12.0

Regenerate gemspec for version 13.7.0

Regenerate gemspec for version 13.6.0

Regenerate gemspec for version 13.5.0

Regenerate gemspec for version 13.4.1

Regenerate gemspec for version 13.4.0