Skia-python

- Implement SVGDOM API ( 134 )

- Dependent Skia version upgraded to milestone 87 (128)
- Implement `YUVAPixmapInfo` and `YUVAInfo` classes
- Implement missing `Image` static constructors
- Implement `PathBuilder` class
- Implement missing `Path` static constructors

Bugfix release for skia milestone 86

- Upgrade skia to m86 latest commit 127
- Fix path and typeface issues 126
- Minor build fix for mac 125
- Add missing Path operations 124
- Fix pybind11 2.6 API usage 123
- Documentation fix 122
- Add python 3.9, drop python 3.5 121

Beta-release. Expect bugs.

Changes:

- Update skia APIs to milestone 86 109
- Small bugfix

Known issues:

- Missing APIs 57 71 72 88

Beta-release. Expect bugs.

Changes:
- Update skia APIs to milestone 85
- Use semantic versioning after skia milestone
- Small bugfix

Known issues:

- Missing APIs 57 71 72 88

v0.0.6.postfix1

Alpha-release. Expect bugs.

Changes:

- API change for NumPy interoperability
- Buffer protocol improvement for various color types
- Support `__array__interface__` and `tobytes` for `PIL.Image` interoperability
- Support with-context in `Surface.getCanvas`, `Document`, `Document.beginPage`, and `FILEStream`
- Improve gpu API bindings
- Add missing PDF APIs
- Fix return value policy on context manager and iterators

Known issues:

- Missing APIs: 57