Most of the tests use gotest.tools/assert as the extended assertion framework in the test.
After the change for PR #66 there is only one test left that uses github.com/stretchr/testify for the assertions.
We should standardise on one assertion tool and move the last remaining test over to the gotest.tools/assert lib.
The test using github.com/stretchr/testify/assert is the log/logger_test.go
This will require a cleanup of the go.mod and go.sum files.