Consistent use of language in output

[Xophmeister]

Is your feature request related to a problem? Please describe.
Topiary's human-readable output -- log messages, errors, etc. -- is not especially consistent. For example:

$ for x in "cannot" "can't" "could not" "couldn't"; do
>   find . -name "*.rs" -exec grep -chiF "${x}" {} \+ \
>   | awk -v x="${x}" '{t += $0} END {print x, t}'
> done
cannot 10
can't 4
could not 20
couldn't 0

Describe the solution you'd like
Consistent use of language.

Describe alternatives you've considered
Being less pedantic 😉