Code review comment for lp://staging/~elopio/snapcraft/log_handler-2

This handles the specific case of the "Wrote the following as snapcraft.yaml:" message. But it feels a bit too magic to me. Doesn't it feel weird to automatically bold things based on whether a colon-newline appears in the string?

This also doesn't address the other print() statements (like when we run a subcommand.

Wouldn't it make more sense to have an argument to the info() call (maybe provided by a subclassed Logger class from snapcraft.log)?