[MatrixNeoKozak]

What

Allows resetting individual test double spy/stub state by calling .reset() on the test double instance, avoiding the need to recreate or replace module dependencies between test cases.

Why

This change resolves the target issue or improvement.

How to test

Verify that the project builds/runs correctly and the specific bug/improvement is addressed.

Fixes #529

[rosston]

Closing. This adds an own reset property to every function double, which changes td.explain's children output and clobbers the child double when the imitated function already has a reset member (9 existing tests in test/safe/explain.test.js fail). The added test also records a call before asserting callCount === 0.

The first question to settle, in #529, is whether the issue should be fixed, and then what the API should be.