Enhancements:
- Add a custom SHA1 digest implementation to no longer depend on the digest gem before we know which version to activate #4989
- Ensure vendored gems have licenses #4998
- Update broken link in Bundler::Fetcher::CertificateFailureError #4987
- Give better errors for some permission issues #4965
- Print better errors when
bundler/gem_tasksfail #4872 - Fix
bundle installto reinstall deleted gems #4974 - Unify issue template and ISSUES.md document #4980
- Bump vendored connection_pool to 2.2.5 #4738