I have posted about KiwiCodes Bonus Tools before, particularly the Excel and data tools. A Sheet Revisions manager has recently been added to the toolset. Check out how quick and easy it is to add revisions to sheets with this:
Honestly, if you have $35 to spend on Revit addins, this Bonus Tools package is definitely what I would spend it on...
Versions for 2013, 2014 and 2015 in one install package:
Bonus Tools | Autodesk Revit | Autodesk Exchange Apps
Video playlist showing all of the Bonus Tools in action:
Clash Report XML to Revit: