[Bf-funboard] Built-in version control

[Prashant Sohani]

Yes.. at the moment, trying to diff or merge the actual file data, I am not
even thinking about.. I am still unsure of how much version control Blender
should really be doing, and if it may be better to let the user use an
external tool of his choice, such as git.

Another thought is to handle the versioning of datablocks in a .blend file
somewhat like git objects.. indeed, a Git repository represents a tree of
commits just as a blend file of datablocks and structures.. mildly poetic,
but I don't know where to go from there.

For the moment, I would keep my focus on file-level versioning, navigation
and branching (no merging), and taking the above script to a more
consistent, complete stage.

Regards,
Prashant