Signax

What's Changed
* small README changes + add white background to speed comparison plots by phinate in https://github.com/anh-tong/signax/pull/29
* Move main functionality to top-level of module + add example notebooks to CI by phinate in https://github.com/anh-tong/signax/pull/30
* Set up Codecov by anh-tong in https://github.com/anh-tong/signax/pull/31
* add Codecov badge by anh-tong in https://github.com/anh-tong/signax/pull/32
* Add option `stream` for computing signature by anh-tong in https://github.com/anh-tong/signax/pull/33
* Bump version to 0.2.0 by anh-tong in https://github.com/anh-tong/signax/pull/34


**Full Changelog**: https://github.com/anh-tong/signax/compare/v0.1.2.1...v0.2.0

What's Changed
* Code quality refactor (based on scikit-hep/cookie) by phinate in https://github.com/anh-tong/signax/pull/24
* Bump codecov/codecov-action from 3.1.1 to 3.1.4 by dependabot in https://github.com/anh-tong/signax/pull/25
* Fix comparison between signatory and signax output by anh-tong in https://github.com/anh-tong/signax/pull/26
* Bump version to 0.1.2 by anh-tong in https://github.com/anh-tong/signax/pull/27
* Fix pypi publish by anh-tong in https://github.com/anh-tong/signax/pull/28

New Contributors
* phinate made their first contribution in https://github.com/anh-tong/signax/pull/24
* dependabot made their first contribution in https://github.com/anh-tong/signax/pull/25

**Full Changelog**: https://github.com/anh-tong/signax/compare/v0.1.1.2...v0.1.2.1

Include two updates (21, 22)

21 - Improve `signature_batch` with `jax.lax.associative_scan`

Edit: fail publish PyPi