uSync 1.7.0 is a bit of a jump in versions - quite a few things have been 'cleaned up' and moved about So i'm not making it the default version just yet - until it's proven itself a bit.

since the last release (1.5.1) the following has been updated

• Rename support for DataTypes - when a datatypes name changes, it will be updated
• DocTypes now use v6 Api
• Property type change - when properties change on existing elements they are updated
• uSync Aborts when umbraco isn't configured - so if you put the uSync files in a blank yet to be ran install it won't try anything, same goes for an upgrade.
• DocType Tab Sort Order = the sort order of tabs is now included
• Events - there are now 6 events in uSync.

in jumps.umbraco.usync.helpers.XmlDoc

• Saving, Saved - when saving a xml file
• Deleting, Deleted - when deleting them

and in jumps.umbraco.usync

• Starting
• Initialized

for when the bulk events at the beginning are done.

The v6 API

The upgrade for DocTypes to 6.1 API is the big change, it hopefully makes little difference - but the code is cleaner, and it is part of enabling me to get a grip on renames / deletes because i can now get the GUID of the doctypes