Pygame-based package for drawing graphical primitives for tutorial purpose.

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• ADD py312 support
• BUMP pygame version to 2.5.2

• ADD Color type
• ADD error message for py3.8 or under.

• ADD py311 support
• ADD pygame 2.5 support
• ADD annotations
• FIX function docs
• DROP support for py3.8 or under

• ADD py310 support
• ADD pygame 2.1 support

• ADD py39 support
• ADD pygame 2.0 support

• ADD py38 support
• DROP py27 support

• small fix: duplicate assert

• more calls _init() in low level functions
• add take_background and draw_background

• added take_snapshot

• budfix pygame init in start_drawing
• move vector width to .draw()

• added width for lines

• added quit()

• added support for line/vector width
• set up resolution