* Use define-command to define and register a command
* Introduce the notion of workspace to store intermediate and target files.
* Update Makefiles for new intended output paths

Updating versions.
Thinking about rehauling the manifest format.

My, that what much more painful than it ought to be.

* Introduce the world-grain abstraction as a step towards a farmer.
* A few important cleanups and refactorings.
* better hush the build

* allow lisp modules with their own build-dependencies different from their parent.

+ shuffling code outside of main.lisp
+ a bit of farming

* start of a forker and farmer
* better error message when you forget to make your dependencies a list
* doc update

Also, clean up the driver.
Preliminary tthsum implementation.
Remove ";;;" from LICENSE.