Add logger_name option

[JoeZiminski]

What is this PR

• Bug fix
• Addition of a new feature
• Other

Why is this PR needed? & What does this PR do?

This PR adds a logger_name variable that lets the logger than fancylog sets up be given a name. This is useful
for grabbing this logger at a later time.

How has this PR been tested?

Added new test to check expected logger_name is created.

Change is not breaking nor requires documentation change.

Checklist:

• The code has been tested locally
• Tests have been added to cover all new functionality
• The documentation has been updated to reflect any changes
• The code has been formatted with pre-commit

[adamltyson]

Looks nice, thanks @JoeZiminski. I've left one comment. Would you also mind adding it's use to example.py too? That's the closest thing we have to docs currently!

[JoeZiminski]

Hey @adamltyson sure, I have added it in the example, making it the 'canonical' way to use fancylog. We could also show a version without filename where logging is done as was previously (logging.info("...")) but not sure if this is overkill. But would be happy to add as another function (rename main to example_with_logger_name then create a second example_without_logger_name.

[JoeZiminski]

BTW after this PR could we release as a new version so it will be downloaded from PyPI? Will help with some datashuttle stuff

[adamltyson]

I think this is fine, I've created #31 to track documenting fancylog properly.

Will release now.

[adamltyson]

New version is released (0.4.1).

[JoeZiminski]

Cheers!