Spyrograph

What's Changed
* Add nephroid object by chris-greening in https://github.com/chris-greening/spyrograph/pull/26
* Add ranuncloid object by chris-greening in https://github.com/chris-greening/spyrograph/pull/27
* Add full path trace by chris-greening in https://github.com/chris-greening/spyrograph/pull/28

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.8.0...v0.11.0

What's Changed
* Add cardioid object by chris-greening in https://github.com/chris-greening/spyrograph/pull/25

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.7.1...v0.8.0

Added Tusi couple as an available object to library

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.7.0...v0.7.1

Added Tusi couple object

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.6.0...v0.7.0

What's Changed
* Modify theta end argument to theta stop by chris-greening in https://github.com/chris-greening/spyrograph/pull/19
* Add ellipse as a special case of hypotrochoid by chris-greening in https://github.com/chris-greening/spyrograph/pull/18

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.5.1...v0.6.0

Fixed missing theta start, stop, and step to all childs of `_Roulette`

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.5.0...v0.5.1