Support autoclose at build level
Merge pull request #49 from mdelapenya/MAKE_AUTOCLOSE_BUILD_SCOPED

Support autoclose at build level
massage commit: 6ad6ec5eb0790c726fb8ce9f2bdccaa38a279634 Support autoclose at build level
add default messages for failure and succes messages
use single GhprbGitHub instance
add pull id and target branch to environment variables