Fix integer overflow issue after 4 billion events (... you never know?)
Fix integer overflow issue after 4 billion events (... you never know?)

scrapinghub/log-courier,scrapinghub/log-courier,dixitk13/log-courier,srizzling/log-courier,srizzling/log-courier,dixitk13/log-courier,dixitk13/log-courier,MichaelLiZhou/log-courier,linearregression/log-courier,srizzling/log-courier,linearregression/log-courier,MichaelLiZhou/log-courier,scrapinghub/log-courier,MichaelLiZhou/log-courier,linearregression/log-courier