Feature
* feat(core): add max_items functionality, so memory usage is decreased ([`337727b`](https://github.com/Rizhiy/class-cache/commit/337727bd990cc55d2d98a6149715d85326daef3c))
Test
* test(test_core): use plain random instead of numpy ([`ec4049f`](https://github.com/Rizhiy/class-cache/commit/ec4049fbca3ab19ebb0a8497786eaa8d2a4b208d))