git squash

Squash multiple commits into a single commit. Part of git-extras. More information: https://github.com/tj/git-extras/blob/master/Commands.md#git-squash.

• Merge all commits from a specific branch into the current branch as a single commit:
  git squash {{source_branch}}
• Squash all commits starting with a specific commit on the current branch:
  git squash {{commit}}
• Squash the n latest commits and commit with a message:
  git squash HEAD~{{n}} "{{message}}"
• Squash the n latest commits and commit concatenating all individual messages:
  git squash --squash-msg HEAD~{{n}}