New assertion - Fuzzy object match

[SergeAstapov]

Hi @NullVoxPopuli!

Thanks for putting these together!

Have you considered fuzzy object match similar to what Sinon.js provides?

E.g. sometimes you need to match two objects and you care about one or two or three props but other props are out of concern for the test.

Currently, you can't use assert.deepEqual() as it will compare all props and it's achievable via something like:

const { foo, bar } = myObject.someMethod();

assert.equal(foo, 'foo value');
assert.equal(bar, 'bar value');

would be nice to do something like:

const result = myObject.someMethod();

assert.fuzzyEqual(result, {
  foo: 'foo value',
  bar: 'bar value'
});

where result might contain few more props that we don't care in this test.

[NullVoxPopuli]

ooo, that'd be cool. Def useful. @SergeAstapov, want to open a PR? :)