[6.1.0] Improving Request matching cache

Improving Request matching cache to avoid memory leaks

Can override IOptions to change cache settings:

services
.Configure<RequestCacheOptions>(options =>
{
	options.SizeLimit = 10;
	options.SlidingExpiration = TimeSpan.FromMinutes(5);
	options.AbsoluteExpiration = TimeSpan.FromMinutes(90);
});

What's Changed

• Request matching cache improvements by @Gekctek in #130

Full Changelog: 6.0.2...6.1.0