Rubber v1.12.0 Release Notes

  • Regenerate gemspec for version 1.12.0 [Matt Conway] Merge branch 'master' into multi_instance_creation [Matt Conway] โž• add ranges to filters, add filter validation [Matt Conway] โš™ don't override default_run_options we don't set [Matt Conway] ๐ŸŽ‰ initial version allowing one to create/destroy multiple instances with a single command [Matt Conway] ๐Ÿ›  fix passenger version check [Matt Conway]