Fix for esp32 boards (#84)

Update library.properties (#81)

Increment version number

Fix bug in Eye matrix (#71)

Bugfixes for version 4.0 (#67)

* Add operator-

* Explain Invert vs Inverse

* Bump version to 4.1

* Add test for operator-

* Fix some wording

Update library.properties (#63)

Upgrade to v3.7

Bump version to 3.6

Update to version 3.5

Update to v3.4