Doc/log/action improvements

[pdiakumis]

Just adding some small doc notes and cleaning the log messages a bit.
Also cleaned up/updated GitHub Action workflow.

See commit messages for details.

[pdiakumis]

I'm also getting the following warning when using the --estimate_tmb option:

Warning message:
`gather_()` was deprecated in tidyr 1.2.0.
Please use `gather()` instead.

I've seen it before and I think it was from a dependency of a dependency, will try and remember.

[sigven]

I'm also getting the following warning when using the --estimate_tmb option:

Warning message:
`gather_()` was deprecated in tidyr 1.2.0.
Please use `gather()` instead.

I've seen it before and I think it was from a dependency of a dependency, will try and remember.

Yeah, I've noticed that one too, and I think you're right (dep of a dep)

[pdiakumis]

Adding it here too - that warning is from plotly, see plotly/plotly.R#2125.
And the backtrace:

Backtrace:
 1. plotly::ggplotly(tmb_plot_site)
 2. plotly:::ggplotly.ggplot(tmb_plot_site)
 3. plotly::gg2list(...)
 4. plotly:::layers2traces(data, prestats_data, layout, plot)
 6. plotly:::to_basic.GeomHline(...)
 7. tidyr::gather_(...)

[pdiakumis]

Just cleaned up/simplified a couple of the dicts, ready for review now.

[sigven]

Looks good, Peter. Thanks a lot for doing these clean-ups.. :-)