Logging package that support levels + colours

[t-lin]

Ideally would like to control verbosity of logging and colours for easier debugging. Should be abstracted and configurable by other services (i.e. some importable package), with verbosity controllable by users via CLI flags.

Right now golang's default logging package is convenient, but lacks support for standard programming logging levels and colours.

Possibilities:

• Creating our own custom logging package (see: https://www.honeybadger.io/blog/golang-logging/)
• Using an existing logging framework (what are the pros/cons of these?):
  • https://github.com/golang/glog
  • https://github.com/op/go-logging
  • https://github.com/uber-go/zap
  • https://github.com/Sirupsen/logrus
  • https://github.com/juju/loggo (APIs seem very Python-esque)
  • https://github.com/inconshreveable/log15
  • https://github.com/ipfs/go-log (wraps zap)