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If you download the package from FirstWave, you'll get the Enterprise functionality which includes the javascript library for charting. If you download, build, and install from Github you won't get the Enterprise functionality, nor the javascript charting library. Those pieces are not open source. Them's the breaks - a guy's gotta eat! 
OK, the nitty gritty. 
system Becomes devices
The largest change - the 'system' table that holds all your device data (IP, name, manufacturer, model, et al) is now called the 'devices' table. Much more intuitive and something I've been meaning to do for years. For those upgrading - your queries, summaries, and widgets (et al) will be upgraded as best we can. I would suggest checking any self-created items to ensure they work as intended. Also for upgraders, we have implemented a 'view' in the database named 'system' which should function as the system table did before and enable a (relatively) painless transition. That view will not exist for new installs. 
Removed Collections
We have removed a few items that were surplus to needs and to be frank, creating unnecessary complexity. Buildings, Floors, Rooms, and Rows are all gone. Those attributes were used only by the Racks collection and the attributes are now stored directly in the Racks table. When you create a new rack you can select an existing building, floor, room, and row or create a new one. Your existing data will populate the racks table as you would expect. 
Removed URLs
All web requests now go to /open-audit/index.php/$collection. Previously we had that URL for Community and /omk/open-audit/$collection for Enterprise. The latter has now been removed. You will need to update any of your own links. 
As a result, we have updated the The Open-AudIT API page. 
The included Response Section
The format of the JSON response for included has changed. Previously it was a single array of objects, each of which could be any type. Now we have included being an object, with each attribute being an array. Each included attribute is the $collection. So now we have included->orgs[{},{}]. This saves time enumerating the entire included array when you need a specific type of item. They're now all neatly grouped together. An example is at the bottom of this page.
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- To retrieve all Bios entries in the database - /open-audit/index.php/components?components.type=bios
- To retrieve all Software from a given machine (ID 2) - /open-audit/index.php/components?components.type=software&devices.id=2
Other Items
The DiscoveriesCollection template has been improved to make it render much faster. Previously if you had many discovery logs, generating the list of Discovery Issues could take a long time and even timeout on occasion. We have revised the logging so we can much more easily select any Discovery Issues and in addition have limited the number selected to 100.
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