Enhancements

[Lucretia]

1. Reset all parameters to defaults.
2. Background colour, so you can have a white logo.
3. Import image/SVG to use:

• Alongside the sub-text, user positionable relative to sub-text (left/right/top/bottom) with offsets.
• In place of the sub-text, in case you want to include a branded logo.

4. Import/Export parameters so you don't have to keep setting them, with 3, might need to include that too.

[Fabien-Chouteau]

These are all great suggestions @Lucretia, we also have to keep in mind that this repo is not trying to be an online SVG editor :)

I think 1, 2, 4 should be doable. I am not sure about 3.