Mmulli/dev

[mmulli]

Hi @lancelet

Thanks for your work! I know that this repo has been idle for a while but i was impressed at how far you got. I was looking for a light weight alternative to heavier crates like Lyon and that importantly supported 3D curves as well as 2D curves. So since this fit the bill so well I'd like to contribute back the following changes (Documentation and example improvements combined with version bumps on Nalgebra etc).

[0.0.4]

Added

• Added short circle example directly to the README as well as to a new examples folder

Changed

• Bumped rust edition to 2021
• Upgraded the Nalbegra dependency to 0.29
• Implemented VectorT for OVector instead of VectorN as VectorN is now deprecated.
• Moved main.rs to the examples folder
• Moved the svg and approx to dev-dependencies as these are used in examples / testing only.
• Edited .gitignore to ignore root level .svg artifacts generated from the example