Adding function to retrieve mice logged events during initial imputation

[ppanko]

I had some issues during createPcAux and got a warning about having thousands of logged events. I didn't see a way to access this information, so I wrote an exported function to retrieve it. Currently, this is for createPcAux only because miWithPcAux has the option to do something like pcAuxData$miceObject$loggedEvents to retrieve this information. Also, the exportedHelperFunctions.R script had some inconsistent spacing, so I fixed that too.