Ranking based parent selection. Selection chance is proportional to
fitness rank
Changed cluster initialisation from random to +/- 5 * e_i 
where e_i are the unit vectors in R^10
mutator min/maxtemp to 0.25 - 1 
sets temp to 0.1 once, whenever a new global optimum is found 
population size -> 100
ranking based parent selection
##SCORE##
function1 9.770103255488815
function2 0.017153552911111515
function3 8.652772623856006
removes |x_i|<5 limitation
As of 14/9 19:44
##SCORE##
function1 9.801983977144392 
function2 0.02417559940050295 
function3 7.762763899125966