ABacker issues

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                                            ABacker

F键对B站投币选择按钮偶尔失灵

**Describe the bug** B站投币时选择1/2硬币, 大多数时候第一次按F时其中一个硬币选项没有按键提示. 偶尔两个都没有, 需要F取消再按F才会出现. 这个BUG应该很早就有了, 一两年肯定有. 不知道是不是B站有什么特殊机制. 第一次按F是这样的, ![QQ截图20220520231922](https://user-images.githubusercontent.com/12003373/169561846-1f7553fe-03e5-431f-8462-a527cc8189ee.png) 取消重按F, ![QQ截图20220520231940](https://user-images.githubusercontent.com/12003373/169561876-28059fe9-ee25-42a2-ad3d-f9fe65ebd79b.png) **To Reproduce** Steps to reproduce the behavior: B站地址, https://www.bilibili.com/ 触发概率大概有50%. **Browser, OS and Vimium C versions**...

enhancement

Crash when meeting wrong expression

This extension is a good idea, but there is a small problem. I copied the math code `log(sinf(atan2f(hypot(abs(a + b), abs(c)), d + f)).` in your readme, which is a...