update version and setup file for release (p5py#451)

bump version

bump version

Omit pyopengl-accelarate due to missing tarball for linux on pip (p5p…

…y#406)

* Omit pyopengl-accelarate due to missing tarball for linux on pip

* Update release notes

Update requirements.txt for twine (p5py#368)

- urlib needs requests >=2.25.0

Bump version to 0.7.1

Bump version

Fixed bug in rendering of 3D primitives

The Geometry class does not have children attribute which caused error in draw_shape() function

BUG: Fixes p5py#12. Vector.random_2d() returns negative values.