`write_xml` and `string_xml` and `intersect`... oh my.

Strictly speaking this is not a breaking change but if you want to use write_xml it's much easier to have a major demarcation for the code.

What's Changed

• Fix typos in README.md by @ptomulik in #201
• Fix typo by @rettinghaus in #205
• Correct Issue 207 by @tatarize in #208
• Issue 206 - Write Output by @tatarize in #209
• Correct Issue #175 - Non SVG Root Element by @tatarize in #202
• Address a subset of issue 204 (actually clipping paths with clippath). by @tatarize in #210

New Contributors

• @rettinghaus made their first contribution in #205

Full Changelog: 1.8.4...1.9.0