We need a coherent strategy for the new driver.

Ideas for now:

• Skip actual ABI commitment until 2.0
• Provide a symbol which implies ABI stability, this can be relied upon and provides an ABI guarantee when available.
• Polyfill optional and string_view into stdx
  • Allow the user to take the system ts, use their own or take the vendored implementation
  • Use https://github.com/mnmlstc/core/ for the vendored implementation