Skia-python

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

Alpha-release. Expect bugs.

Changes:

- Organize documentation with rtd theme
- Upgrade skia to milestone 84 release
- Add PDF Document and SVG API
- Add method tests (Point, Size, Rect, RRect, Color)
- Add Text drawing notebook
- Fix VM build and test errors

Known issues:

- Missing APIs: 57

v0.0.4.postfix1
WIndows release build fix

Alpha-release. Expect bugs and lack of documentation.

Changes:

- Add method tests (Bitmap, Data, Matrix, Picture, Pixmap, Region, Vertices)
- Add Paint and Python Image I/O notebooks
- Fix VM build and test errors
- Implement Codec (Bloodb0ne)

Known issues:

- Missing APIs: Document and PDF
- Missing tutorial document