renamed stats so that both stats fit
renamed to _stats
stats as property
refactoring run. created methods runTest + printTestStats
printTotalStats
no passing the stats, this is easier and nicer
docs + renamed  =>
docs + renamed printTotalStats => printOverallStats
PHPTest\Statistics
increaseAsserts
increase with custom values
make sure strings are handled correctly
increasePassed
increaseFails
compare to whole array in order to make sure that only one value is increased
run PHPTest/Statisics in Run
refactored statistics
increase with an array
docs
assertSame positive test