Switch to log4s

[echeipesh]

Overview

GeoTrellis uses com.typesafe.scalalogging package. This is a popular library but unfortunately the LazyLogging trait that is used to mix-in a logger has shifted around a number of timers through the version history. This causes frequent binary incompatibility problems.

This PR removes dependency on typesafe-scalalogging in favor of log4s and moves all logging to private members to minimize their leakage.

Hopefully this will help us with conflicts and add some nice features to our logging.

Additionally:
GeoWave/GeoMesa do not log errors with experimental notice

[echeipesh]

CQ: https://dev.eclipse.org/ipzilla/show_bug.cgi?id=20902

[pomadchin]

LGTM, what buys me in this library, that the syntax to create an instance of a new logger is just shorter (one func call with no parameters vs logger instance creation + wrapping it into scala wrapper).

Once CQ would be done, merging!

[pomadchin]

Resolves #3114 but for the master branch.