Increment patch in a git project and increment version in the package.json of node project

bump.sh

# Auto increment Z of X.Y.Z if a new pull request is merged
LATEST_TAG=$(git describe --abbrev=0)
INITIAL_TAG=$LATEST_TAG
for i in $(git log $LATEST_TAG..HEAD --format="%cI %H" | sort -rV | grep "Merge pull request" | awk '{ print $2 }'); do
    NEXT_TAG=$(echo $LATEST_TAG | awk -F. -v OFS=. '{$NF++;print}')
    BODY_ABBREV="$(git show $i --format=%b | head -n1)"
    git tag -a "$NEXT_TAG" -m "Tag for $BODY_ABBREV" $i
    printf "Tagging commit $i with $NEXT_TAG and pushing to master\n"
    git push origin "$NEXT_TAG"
    LATEST_TAG=$NEXT_TAG
done

# Change package.json version to latest (should be both GNU/BSD sed compatible)
sed -i.bak "s/version\(.*\)$/version\": \"$LATEST_TAG\",/g" package.json