Allow float values for the `--delay` parameter

[ShaiAvr]

Context

I use sphinx-autobuild in my project, and I noticed the --delay parameter which controls how long to wait before opening a browser is of type int as can be seen from the code in cli.py and in the command line:

This seems odd to me since time can obviously be a float.

The --delay parameter is directly passed as the parameter open_url_delay to the Server.serve() method of the livereload package as can be seen here. Looking at the documentation of this package, it seems that this parameter doesn't have a problem with float values. Furthermore, looking at the code of Server.serve, this parameter is simply passed to time.sleep which obviously can handle floating values.

Therefore, it is extremely easy to allow support for floating values of the --delay parameter. We just need to change the argument's type to float instead of int and it should work without further changes.

Proposal

Change the type of the --delay argument to float to allow specifying floating time. It should be the only change necessary to support floating values for this parameter. I can write a PR to implement this change if there are no problems with it (Note that it would be the first time I make a PR).

Tasks and updates

No response

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[AA-Turner]

Done in f17b2ab74356e0c6dd5bb0e99079950f7062769c.

A