Liberapay link has no accessible name
### Issue 

```
<a href="https://liberapay.com/zedeus"><svg class="lp" viewBox="0 0 40.6 52.3">
  <g transform="matrix(0.83,0,0,0.83,-158,-261)">
    <path d="m202.5,366c-3.1 0-5.5-0.4-7.3-1.2-1.8-0.8-3-1.9-3.8-3.3-0.8-1.4-1.1-3-1.1-4.8 0-1.8 0.3-3.7 0.8-5.8l8.3-34.8 10.2-1.6-9.1 37.8c-0.2 0.8-0.3 1.5-0.3 2.2 0 0.7 0.1 1.2 0.4 1.7 0.3 0.5 0.7 0.9 1.3 1.2 0.6 0.3 1.5 0.5 2.7 0.6l-2 8.1"></path>
    <path d="m239.2 344.3c0 3.2-0.5 6.1-1.6 8.8-1 2.6-2.5 4.9-4.4 6.9-1.9 1.9-4.1 3.4-6.7 4.5-2.6 1.1-5.4 1.6-8.5 1.6-1.5 0-3-0.1-4.5-0.4l-3 11.9h-9.7l10.9-45.4c1.7-0.5 3.7-1 6-1.4 2.3-0.4 4.7-0.6 7.3-0.6 2.4 0 4.6 0.4 6.3 1.1 1.8 0.7 3.2 1.8 4.4 3 1.1 1.3 2 2.8 2.5 4.5 0.5 1.7 0.8 3.6 0.8 5.5m-23.8 13.4c0.7 0.2 1.7 0.3 2.8 0.3 1.7 0 3.3-0.3 4.7-1 1.4-0.6 2.6-1.5 3.6-2.7 1-1.1 1.7-2.5 2.3-4.1 0.5-1.6 0.8-3.4 0.8-5.3 0-1.9-0.4-3.5-1.2-4.8-0.8-1.3-2.3-2-4.3-2-1.4 0-2.7 0.1-3.9 0.4l-4.6 19.1"></path>
  </g>
</svg>
</a>
```

It's an empty link for assistive technologies.

### Solution

```
<a href="https://liberapay.com/zedeus" title="Liberapay — zedeus">
<svg class="lp" viewBox="0 0 40.6 52.3" role="img" aria-label="Liberapay">
  <g transform="matrix(0.83,0,0,0.83,-158,-261)">
    <path d="m202.5,366c-3.1 0-5.5-0.4-7.3-1.2-1.8-0.8-3-1.9-3.8-3.3-0.8-1.4-1.1-3-1.1-4.8 0-1.8 0.3-3.7 0.8-5.8l8.3-34.8 10.2-1.6-9.1 37.8c-0.2 0.8-0.3 1.5-0.3 2.2 0 0.7 0.1 1.2 0.4 1.7 0.3 0.5 0.7 0.9 1.3 1.2 0.6 0.3 1.5 0.5 2.7 0.6l-2 8.1"></path>
    <path d="m239.2 344.3c0 3.2-0.5 6.1-1.6 8.8-1 2.6-2.5 4.9-4.4 6.9-1.9 1.9-4.1 3.4-6.7 4.5-2.6 1.1-5.4 1.6-8.5 1.6-1.5 0-3-0.1-4.5-0.4l-3 11.9h-9.7l10.9-45.4c1.7-0.5 3.7-1 6-1.4 2.3-0.4 4.7-0.6 7.3-0.6 2.4 0 4.6 0.4 6.3 1.1 1.8 0.7 3.2 1.8 4.4 3 1.1 1.3 2 2.8 2.5 4.5 0.5 1.7 0.8 3.6 0.8 5.5m-23.8 13.4c0.7 0.2 1.7 0.3 2.8 0.3 1.7 0 3.3-0.3 4.7-1 1.4-0.6 2.6-1.5 3.6-2.7 1-1.1 1.7-2.5 2.3-4.1 0.5-1.6 0.8-3.4 0.8-5.3 0-1.9-0.4-3.5-1.2-4.8-0.8-1.3-2.3-2-4.3-2-1.4 0-2.7 0.1-3.9 0.4l-4.6 19.1"></path>
  </g>
</svg>
</a>
```

1. Add role="img" on the `<svg>` tag.
2. Add aria-label="Liberapay" on the `<svg>` tag.
3. You could also consider adding a title attribute on the link for people who may not recognise the logo.