pub(crate) fn init_tracing()Expand description
Install the console subscriber the whole app logs through, so a failure
reported with tracing::error!/warn! is not swallowed. RUST_LOG
raises it: RUST_LOG=blockworx=info for what the store is doing,
RUST_LOG=edit=debug to narrate every document mutation (the named
Drawing setters), edit=trace for the per-frame drag writes.
There is no span-timing switch. --trace was one, and every span it
could close was on the frame path, which nothing here runs.