Worked on x.range , x.first , x.last , x.intersection
Worked on x.range,x.first,x.last,x.intersection,x.indexofbool,
x.indexOfvalue,x.sortedIndex,x.merged
Merge branch 'HEAD' of git@github.com:maniartech/xlib.git

Conflicts:
	src/x.array.js
	tests/simple-tests.js