Many SVG attributes are camelCase when they should be kebab-case

[Rupert Smith]

A list of all the attributes can be found here:

https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute

The ones that expose style (then can also be set with css) tend to be kebabCase and the ones that are solely for SVG tend to be camelCase. Work through the list above and update Attributes.elm to correct them all.