Now there are two experimental feature options:
* "New Curves Type": Enables the new data type and a couple of tools
that are meant to be in the first release that comes with the new curves object.
* "New Curves Tools": This is only available when the new curve type is available
as well. It mainly exists to keep some tools experimental even after the initial
curves object is release officially.
* For now this only includes the curves edit mode which is not usable yet and
probably won't be for the initial release.
Differential Revision: https://developer.blender.org/D14840
5162135e14