Fonttools version bump (#332)

* Downgrade fonttools from 4.61.1 to 4.60.2 To allow for python 3.9

* Update Python versions in tox environment list

* Update Python version requirement to 3.9

* Update Python versions in CI workflow

* Modify Python version exclusions in CI workflow

Update publish-package.yml

Version 0.9.3

improve FilterRedundantPointPen when starting points are differently …

…set (#277)

fixes #276

Update fonttools from 4.26.2 to 4.28.5 (#267)

Drop py 36 (#268)

* Update run-tests.yml

* Update README.md

* Update tox.ini

Bump version: 0.7.0.dev0 → 0.7.0

0.6.0

- [mathGlyph] Added ``scaleComponentTransform`` option (True by default)
  to allow excluding components' xScale, xyScale, yxScale and yScale
  values when performing scalar multiplication/division on MathGlyph.
  This can be useful when scaling a font's UPEM (#193, #194).