`git backup` command

[epage]

Use case: users unsure what git-stack will do and want a way to give them more confidence by undoing the action

Proposed solution:

• git stack --rebase always performs a backup to .git/backups/git-stack.bak)
  • Mapping of branch names to commits with metadata to give hints about what was happening (e.g. commit summaries, date)
• git branch-backup push creates a backup, defaulting the output path to .git/backups./recent.bak
  • Allow adding a comment
• git branch-backup list enumerates files in .git/backups
• git branch-backup clear removes backups in .git/backups
  • drop to remove a specific one
• git branch-backup pop <path> applies the backup (defaults to recent.bak)
  • Auto-deletes
  • Use apply to not auto-delete