speed-upgrade-03

Full Changelog: v0.2.2...v0.2.3
Comes with couple microsecond (on decent hardware and) expression solving ability while maintaining its full feature stack. Graphing feels butter-smooth and iterations shouldn't feel so iterative.

At 5 microsecond, moderately complex expressions such as

String s6 = "5sin(3+2)/(43-2)";
can be evaluated almost 200 thousand times per second.

The model of a Matrix has also been optimized to use a 1D array internally. This makes it faster due to memory locality of Matrix data.

Also, we support eigenvalues and eigenvectors as inbuilt methods, so enjoy!

Full Changelog: v0.2.2...v0.2.3