V2 : several fixes for modeling

[z3dev]

These changes fix several issues found in the modeling package.

• fix(modeling): added startAngle and endAngle options to ellipse / circle, and expanded test cases
• fix(modeling): corrected offset if segments are paralell, and expanded test cases
• fix(modeling): allow geom2.fromPoints() to accept the same closing point as the first point, and expanded test cases
  • the SVG deserializer tests required changes as this change to geom2 corrected issues with duplicate points

In addition, the 'hoisting' of 'ava' and 'nyc' has been corrected. The bootstrap process is now exceedingly fast. 👍
Also, test and coverage scripts can be executed inside the individual packages. 👍

There's a fix for the remote proxy process as well, which was included to excellerate the review.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Does your submission pass tests?

Additional testing was performed with CLI and WEB UI.

[BarbourSmith]

I appreciated these changes. They fixed a bug I noticed. Thank you.