updated to 4.1
Revert "updated to 4.1"

This reverts commit 83f660bbda296ab56e3477c1c3a91b33981c1f07.
updated to 4.0.1
Merge branch 'master' into 4.0.1-branch
Merge pull request #3 from osltc/4.0.1-branch

4.0.1 branch