playground: gosh: switch from Logf/Fatalf to TB, and related

This change makes most of the changes described in the final
proposal in https://v.io/i/1128 - namely, it makes all the
requisite API changes.

Things not done in this change:
- "Good PC" logging
- Printing Cmd stdout/stderr on failure

Those will be done in subsequent changes.

MultiPart: 8/9

Change-Id: I043f7ee0cc482d6bfd3ec93293bc1e3f9a9242f0
1 file changed
tree: e6adb00c0038525746e2f12bec31502f66caf728
  1. client/
  2. go/
  3. .gitignore
  4. AUTHORS
  5. CONTRIBUTING.md
  6. CONTRIBUTORS
  7. LICENSE
  8. PATENTS
  9. README.md
  10. VERSION
README.md

This repository contains the Vanadium project playground.