Add colors param to SimplePrinter

[galki]

SimplePrinter(colors: true)

Reason: color is easier than having to search for [E] ...

[haarts]

Wouldn't the PrettyPrinter be best suited for this purpose?

[galki]

Perhaps. The problem is that I have limited console space and PrettyPrinter eats up a lot of it. It would make work easier to have the option to output single-line logs which would stand out clearly from the rest of the non-logger output... even if it was a single hard-coded color other than gray.

[haarts]

Yesterday I've done quite a bit of research into colouring console output. The way I'm thinking about it now is that this would be a good feature to have. I want to implement it as follows:

• detect if a terminal is attached and if that terminal supports ANSI escapes
• iff so color the output. I'm planning to use the stdlib io for this an phase out our custom coloring code

So it would be an automatic process. I hope I have time for this end of this week/beginning of next week.