V. 1.5.0

Using the tool myself I found out that when creating a new road type I spent a lot of time scrolling in the curve editor window to for example change the start width of a lane from 3 to 0. So I decided to do something about it, so now you can edit the value of all keys directly in the editor, speeding up situations like this enourmously! This release also inproves terrain deformation, the results should now look a lot nicer. It does do more calculations now so let me know the performance is!

1.5.0
- Added option to expose animation curve keys for easy editing
- Better terrain deformation
- Fixed prefab line percentage being incorrectly calculated causing the y and z-scale curves not matching reality
- Fixed y-offset sometimes affecting terrain deformation
- Changed default value for extra max height (terrain deformation) to 3
- Some small naming tweaks to a few variables