WIP: refactoring, no supporting specs for newly exposed functionality
tweaks after testing this code in rowlf
refactoring specs
rename Progress class to Tracker
rename Progress file to Tracker
completed specs for new logging_with_fozzie functionality [#37680929]
tweaking names
move LoggerWithStats to its own file
update readme and bump version
Merge pull request #5 from lonelyplanet/ar_refactor_to_expose_logger_with_stats_PT37680929

Refactor to expose logger with stats - Pivotal 37680929