Add comment column

[lbschenkel]

Hi. I think it would be useful to allow an optional comment (or notes) column, just after function, which would enable documenting a little bit better what a specific code does.

For example, a Panasonic code for INPUT TV could be documented as "Switches input to TV, or toggles tuner among analog/digital/etc.".

I have documented/clarified a number of codes over the years and I would like to be able to contribute this documentation to this project. What do you think? If you like this idea, I can then submit some PRs.

[probonopd]

Wdyt @bengtmartensson?

[bengtmartensson]

The current (CSV) format has a number of shortcomings; the absence of a comment field is just one. I have written it down as #58, together with an alternative (Girr). This would be a systematic solution.