lotp

I think the solution to your high frequency problem may be doing some adjustment to the parameters of the algorithm.

Actually, it's nearly impossible to achieve an anki like spacing with sm2-plus. Both sm2-plus and the original sm2 algorithm have their own drawbacks. I think we need something new.

@yesmeck , I'll write an example tomorrow.

We have an example for the virtualized feature now. @yesmeck

@kafkahw I fell sorry to tell you there's nothing I could do to advance this PR.