1.03	2017-06-10
		- Added 'command is not specified' error
		- Bug fixed for each in perls version older than v5.12 (#2)

1.02	2017-06-06
		- Bug fixed for each in perls version older than v5.12

1.01	2017-05-31
		- Added log argument

1.00	2017-05-29
		- First release