Fix DrawShadows with no shadows
Python: metrics for overhead
New/free sections
Recycle: Sections.intersects
Recycle: Compute.icInsertSplit
Recycle: Compute.compareSection
Recycle: Compute.commonSection
Python: Put class and static methods in class
Python: Have optional reserves for objects
Python: fix class-bound method of instance
Python: reserves can take many
Python: Fix __make__
Tidy NewSections
Compute: fix and use __make__/__take__