tea☆

fix: fix _agenix_generation being (very shortly) empty if readlink fails

2

I'm currently trying to improve agenix (mostly for myself) and realized that `_agenix_generation` never gets set properly. When `basename` wraps `readlink` in quotes, the or condition that would return `0`...

**Describe the bug** Tag names for SVG elements can't be aliased. I saw in the code that aliasing is currently only implemented for HTML elements, but it should probably work...