Regenerate gemspec for version 0.12.2
Regenerate gemspec for version 0.12.2

coderunner-framework/coderunner,coderunner-framework/coderunner,coderunner-framework/coderunner,edmundhighcock/coderunner,edmundhighcock/coderunner,edmundhighcock/coderunner,coderunner-framework/coderunner