Avmath

[Find release](https://github.com/ballandt/avmath/releases/tag/1.1.0)

* Angle class
* Modes DEG, RAD, GRA
* Angle.get() method

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When the evmath project was uploaded to github, its version
number was reset to 1.0.0 . Previously it was on version number
1.8.0 , but lacking a valid changelog.