[Feature Request] Logger

[omaus]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when I'm realizing that the ArcCommander has no Logger.

Describe the solution you'd like A clear and concise description of what you want to happen. A Logger. NLog seems to be an appropriate choice for our needs.

Describe alternatives you've considered A clear and concise description of any alternative solutions or features you've considered. Writing an homemade Logger (not recommended if there are good ones for free, as the one mentioned above).

Additional context Add any other context or screenshots about the feature request here. Many other professional/famous/done-well libraries with command-line tools use Loggers. See, exemplarily, here.

[HLWeil]

Duplicate issue: #16

[omaus]

Done by merging #88