This commit replaces github.com/spf13/viper with github.com/knadh/koanf. Koanf is very similar library to viper, with less dependencies and several quality of life differences. This also allows most config options to be defined by ENV. Lastly it also enables the use of split configuration files which can be configured by setting the --config flag multiple times.
Co-authored-by: Amir Zarrinkafsh <nightah@me.com>
* refactor: logging config key to log
This refactors the recent pre-release change adding log options to their own configuration section in favor of a log section (from logging).
* docs: add step to getting started to get the latest tagged commit
This is so we avoid issues with changes on master having differences that don't work on the latest docker tag.
* test: adjust tests
* docs: adjust doc strings
This is so levels like warn and error can be used to exclude info or warn messages. Additionally there is a reasonable refactoring of logging moving the log config options to the logging key because there are a significant number of log options now. This also decouples the expvars and pprof handlers from the log level, and they are now configured by server.enable_expvars and server.enable_pprof at any logging level.
