* onemax.py: added strategy options
* ../src/dim/vectorupdater/Easy.h: simplified
* ../src/dim/utils/GetMigrationProbability.h: added GetFeedbacks stat class
* ../src/dim/utils/FileMonitor.cpp: simplified
* ../application/OneMax/onemax.cpp: updated default value of stepTimer and rewardStrategy paramaters
* ../src/dim/do_make/checkpoint.h: added GetFeedbacks stat class
* dim.py: added new magic function to MutableValue, status attribute to Fitness, data arg to continuator classes, created a few stat classes, added PrintMonitor in order to print results to files, simplified Feedbacker and Reward classes
* onemax.py: added new paramaters