[llvm-branch-commits] [clang-tools-extra] [clangd] Add clangd 18 release notes (PR #84436)

[kadir çetinkaya via llvm-branch-commits]

kadircet wrote:

i believe @tstellar should have that power :rocket: 

Do you mind merging this into the branch, or advise on how we should do that instead?

https://github.com/llvm/llvm-project/pull/84436