added extra tests for 07.1.range task
requested to merge python/students-fall-2023/Arkady:contributing-fixed-07.1.range-test_access into main
HW 07.1.IteratorsGenerators
, task range
.
Added tests for indexing a range using negative indexes.
For example
assert range(5)[-3] == Range(5)[-3]
I assume there are currently no private tests like this, because my previous solution without this corner case handling passed.