Spyrograph

What's Changed
* Add screensave option by chris-greening in https://github.com/chris-greening/spyrograph/pull/133

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.21.0...v0.22.0

What's Changed
Significantly improved the `animate` speed

* Increase test coverage by chris-greening in https://github.com/chris-greening/spyrograph/pull/130
* Added test for when an invalid scale value is passed to scale by chris-greening in https://github.com/chris-greening/spyrograph/pull/131
* Add screen coordinate feature by chris-greening in https://github.com/chris-greening/spyrograph/pull/132

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.20.6...v0.21.0

What's Changed
* Refactor functionality into _misc by chris-greening in https://github.com/chris-greening/spyrograph/pull/129

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.20.5...v0.20.6

What's Changed
* Refactor into core subpackage by chris-greening in https://github.com/chris-greening/spyrograph/pull/128

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.20.4...v0.20.5

What's Changed
* Increase unit test coverage by chris-greening in https://github.com/chris-greening/spyrograph/pull/125
* Run Pylint against _Cycloid by Sjorza in https://github.com/chris-greening/spyrograph/pull/126
* Fix all existing Pylint flags by chris-greening in https://github.com/chris-greening/spyrograph/pull/127

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.20.3...v0.20.4

What's Changed
* Refactor the repr for _Trochoid by jlonge4 in https://github.com/chris-greening/spyrograph/pull/122
* Added parentheses to __repr__ thetas by chris-greening in https://github.com/chris-greening/spyrograph/pull/124
* Added checking if the list of thetas is empty by ny248 in https://github.com/chris-greening/spyrograph/pull/123

New Contributors
* jlonge4 made their first contribution in https://github.com/chris-greening/spyrograph/pull/122
* ny248 made their first contribution in https://github.com/chris-greening/spyrograph/pull/123

**Full Changelog**: https://github.com/chris-greening/spyrograph/compare/v0.20.2...v0.20.3