nestle is used in the tests, so is required for CI. Its lightweight and
pip installable so doesn't add too much overhead.

- Removes previous failed attempt at standard likelihood calculation
- Adds in a test of recovering the luminosity distance

Small changes to set data

See merge request Monash/peyote!9

Updates the method used to create frequency array

See merge request Monash/peyote!8

- Also changes the order a bit to make it clear that the default is the
  given frequency_strain_data
- Raises a warning if no method provided
- Adds logging output

- Adds utils function to facilitate writing logging output to the
  terminal
- Adds this to the basic tutorial

Ensures the resulting array is always odd as expected.