How-to guides on how to extend RooFit with custom classes or to work on RooFit itself.

Modules
	RooBatchCompute library guide
	Overview of the RooBatchCompute library.

	How to extend the use of Automatic Differentiation in RooFit
	Developer guide on how to add support for Automatic Differentiation via code generation.

	Implement JSON I/O for a RooFit class with RooFit HS3
	Guide on how to add JSON IO for you RooFit classes.

	New RooFit TestStatistics usage notes
	Notes on the new `RooFit::TestStatistics` classes.

Modules