Optimize and add index range check for "index" in FiniteSetAggregate
add warning to "terms" function documentation
Generalize 'inverse' to DivisionRing
Cleanup duplicated and unused functions from Tree
Get inline optimization for some Integer functions
Cleanup default implementation of 'leaves' and 'nodes'
Fix infinite loop for 'leaves' in IndexedList
Fix a typo in docstring in BRAGG
Fix 'children' in URAGG and Stream, add documentation
fix 'children' in BinaryRecursiveAggregate