message: doc: drop rust from tagline; wraps line
diff: -Mesh: Compacting Memory Management for C, C++, and Rust
  -=======================================================
  +Mesh: Compacting Memory Management for C/C++
  +============================================
  Mesh is a drop in replacement for
  [malloc(3)](http://man7.org/linux/man-pages/man3/malloc.3.html) that
  