Bug fixes:
- Fix underscore version selection for bundler #2908 by David Rodríguez.
- Add missing wrapper. Pull request #2690 by David Rodríguez.
- Make Gem::Specification#ruby_code handle OpenSSL::PKey::RSA objects.
Pull request #2782 by Luis Sagastume. - Installer.rb - fix #windows_stub_script. Pull request #2876 by MSP-Greg.
- Use IAM role to extract security-credentials for EC2 instance. Pull
request #2894 by Alexander Pakulov.