pcall and stacktrace

[Fabian Maurer]

pcall currently does not return the original stacktrace, but for debugging it would be nice to do so. Or to give players an message on a crash, and still get the stacktrace.

[Chimaine]

pcall now returns a table with the stacktrace as a third value in case of an error. Closes #34.

→ <<cset 12bbf76b2086>>