Phidl

Changes
- A few under-the-hood optimizations

Bugfixes
- Fixed error with quickplot where the last edge of a polygon was not rendered
- Problem with route() and inset() caused by implementation of Layer(). You can now pass route() and inset() a Layer and it will parse it correctly

New features
- Layers() are now implemented. See tutorial_example.py "Using Layers" section for a demonstration
- You can now construct a Device using a set of parameters. See "Constructing a Device from set of parameters" in tutorial_example.py
- Usage of the annotate() function has been added to tutorial_example.py
- quickplot rendering speed has been sped up by a factor of 10x

Changes
- pg.rectangle() now takes "size" as a parameter rather than "point1" and "point2"

- Large number of upgrades

- Initial release!