Adding index argument to Array.each
Merge remote-tracking branch 'upstream/master'
improving benchmark
Merge remote-tracking branch 'upstream/master'

Conflicts:
	benchmark/_lib/benchmark.clv
	benchmark/run.clv
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
improves on benchmark script
Now benchmark is working
String toLower, toUpper and replace methods
err
forgot tests
Merge remote-tracking branch 'upstream/master'

Conflicts:
	benchmark/_lib/benchmark.clv
	benchmark/run.clv
fixing murilo suggestions
Merge pull request #297 from pedrofaria/master

String methods and benchmark in clever...