Setup basic logging for reclass

* Create a new module, reclass.logs with a basic configuration
  provided to logging.config.dictConfig()
* Log messages to stderr by default
* Set default log (verbosity) level to ERROR
* Provide a new flag, --debug, to enable debug messaging (set log
  level to DEBUG)

This does not make use of the logging as much as provide the basic
structures to use.
replace null vvv() prints with logger.debug()

use RECLASS_NAME from reclass.defaults to specify the logger
Update reclass cli entry points, use the logger from reclass.logger

While the reclass.logger module initializes a logger with a basic
config, it also enables/disables debug logging with the --debug option
flag. Thus, we want to use the logger initialized by reclass.logger for
the CLI entry points.
Version update for 1.4