Important! The 4.1.0 version has an issue - inability to upgrade from v.3.8.3 and below to v.4.1.0. If your current version is 3.8.3 or below, update to version 4.1.1 instead.
After updating to 4.1.0 a complete re-indexing of commit data will take place. It is recommended to schedule the update onto off-hours.