Main part is the addition of the transform for measurement tools in sheets that allows for a point in sheet coordinates to be transformed to it's 3d counterpart. This is a 3 part operation which is why is is stored in 3 parts.
The Location measurement uses this new transform (when activated and used in sheets) to display the accurate 3d coordinates.
When hovering over a drawing that's not suited for the measurement you are using, prevent clicks and display the stopping sign cursor.
Using a different location for origin and extents of drawings that is pre-transformed. This fixes the app being unable to locate profile drawings as they had transformed origins.
This PR covers a few things: