To update just replace the old files with the new ones. Please do not delete appsettings.xml if you are upgrading.
There are additional 3 files in this release.
BypassNestedModeration added to Group Reports
MessageCount on groups reports now uses EXPAND event to gather message count.
Minor bug fixes on Message Tracking
Retention Policy added to Mailbox Report
Litigation Hold added to Mailbox Report
Audit Enabled added to Mailbox Report
Hidden From Address Lists added to Mailbox Report
Archive Enabled added to Mailbox Report
Room Mailbox added to Mailbox Report
Export to Excel function added to all reports. (using ClosedXML http://closedxml.codeplex.com/)
Added Set-ADServerSettings -ViewEntireForest $True after opening the runspace. Only "Set" command in the code. :)
Thanks Jerry Gassie for the feedback and preventing a buggy release.