Opam-publish 0.3.0

See full changelog
  • Add two-factor authentication support
  • Now requires github >= 1.0.0, opam-lib = 1.2.2
  • Use the finer lint results from opam-lib
  • Fix a terminal corruption bug from Ctrl-C at password prompt
  • Improve GitHub API error reporting
  • Fix GitHub token file permissions security vulnerability
  • Fix GitHub token errors for revoked or unknowable (since 2015/04/20) tokens