Multi-line SVG is not exported correctly

[Frank3K]

The exported SVG is exported using single quotes, but this generates invalid JavaScript code when the SVG file contains more than a single line. Backticks could be used instead, or newlines can be stripped.

rollup-plugin-inline-svg/src/index.ts

Line 18 in a95f1c9

return {code: `export default '${SvgProcessor.process(code, {...options, fileName: id})}'`, map: {mappings: ''}};

[sionzee]

Hi, backticks would break compatibility with the IE11. #4

Stripping the new lines makes sense, and I would go for that option.