Prepare vector drawings for the Openbuilds Acro & Axidraw Pen plotters

• Create outlines from borders & text
• No open shapes. All shapes should be closed. This means that until there's a workaround, single line fonts are not possible yet.

For the Acro plotter: the workspace origin is in the left bottom corner:

Tools to generate SVG files:

• A collection of creative tools: https://drawingbots.net/knowledge/tools
• A seamless pattern generator: https://www.kennethcachia.com/plain-pattern/