Revert "Use eachLimit rather than eachSeries"
Revert "Use eachLimit rather than eachSeries"

This reverts commit 86d891db8bacd0d93e0d836f79d14ec8cf40fd9f.

legoboy0215/ghfollowers,simplyianm/ghfollowers,legoboy0215/ghfollowers,simplyianm/ghfollowers