Replace usages of io.aviso/pretty with org.clj-commons/pretty

[hlship]

The main issue is that anyone who is using customized fonts (as per the documentation on the wiki) will see failures, because the values have changed from strings to keywords.

This may warrant a major version upgrade in Timbre, or at least, a strongly worded note in the change log.

[hlship]

A further note: org.clj-commons/pretty has built-in checks for whether its likely that output is directed to a console or not; in the latter case, ANSI formatting codes (font and color) are eliminated automatically; I'm not sure who logs to a file with ANSI formatting, but that's likely going to be an explicit opt-in (there's a system property that can be set to override the normal check).

[ptaoussanis]

Thank you very much Howard! I'll definitely take a closer look at merging this when I'm next on batched Timbre work 👍

Cheers :-)

[ptaoussanis]

Will be addressed in upcoming release, closing 👍