buffered loggers), fixed a few logging-related things, and added
cooldown wait in shutdown to Gosched the logging ring buffer.

Signed-off-by: Silas Davis <silas@monax.io>

language for building logging configs from preset sink tree builders.

Signed-off-by: Silas Davis <silas@monax.io>

channels. Adds a lot of complexity and the same value can be
better satisfied by the sinks mechanism (just filter).

licence: remove various GPLv3 copyright headers;

event_new: remove unused package that had been copied for discussion

monax: lingering eris -> monax company rename

licence: last pass, further cleanup