note on cool_ratio
Merge branch 'master' of https://github.com/darkfeline/scheduling1

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Merge branch 'master' of https://github.com/darkfeline/scheduling1

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.