Hi, we've moved the default branch of KSP from `ma...

# ksp

[Ting-Yuan Huang]

Hi, we've moved the default branch of KSP from master to main. If you don't have a local copy of KSP source code, please feel free to ignore this message. If you do, you may want to update origin by git branch -u origin/main <your-local-branch> and git remote set-head origin -a .

[Ting-Yuan Huang]

btw, pull requests are re-targeted automatically.