add multi-level verbosity to the logging

[bradzacher]

I wanted a way to silence the all but the most important logs, to reduce a bit of the clutter in my command window.

Verbose is now a Number option:

• 0 = warnings
• 1 = warnings + info
• 2 = warnings + info + verbose

Has handling for converting the old boolean property value to the Number value:

• false maps to 1
• true maps to 2

[bradzacher]

@ssreekanth changes made and tested okay

[bradzacher]

@ssreekanth - sorry, i cooked a bad batch of copy pasta

[ssreekanth]

@bradzacher Merged. Thank you! 👍