Feature request : no completion caching when limit reached

phpactor enforces a limit (configurable) on the number of returned completion candidates.

Sometimes (rarely in my experience), the desired candidate was not among the first candidates due to that limit, and due to company's caching, it can take more keystrokes than expected to have it suggested (= bad user experience).

Thus, I think it would be useful to selectively disable company's caching, based on the number of returned results (phpactor fixes that limit at 100 by default).