Revert 9ae7b32..ec19d3b

This rolls back to commit 9ae7b32d310c318fb252784d3d86a2f2643928de.
Revert "Revert 9ae7b32..ec19d3b"

This reverts commit 94cea3e831218a3b9bab918cf0dbfb4df7ec0ddb.
Revert "Minimal Improvement"

This reverts commit ec19d3be8c1f105b17fd4ba4e566ee6a57803567.
Whew, that was a close one
Merge branch 'master' of https://github.com/katsuya94/malloclab-handout