cli: make all variables found from environment variables #109
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Description
The python
click
module is pretty cool. I've not seen in before this project and I like it.One feature of
click
is to make every option and parameter able to be specified by an environment variable.https://click.palletsprojects.com/en/8.0.x/options/?highlight=auto_envvar_prefix
This was a very simple change to make, but I've found it quite nice, especially with the extra command-line arguments I've been giving the commands like in PR #107 and PR #108, among others that I have done in my fork.