Release v1.4.0 Herschel · Zushah/Chalkboard

The sixth release of the Chalkboard library, version 1.4.0. Main updates include:

Added many new commands for arrays, including but not limited to: calculating different types of the norm (and the squared norm) of an array, calculating the array that has the numbers that are equal to, greater than (or equal to), less than (or equal to), or some compound inequality of another number or array, calculating the skewness and kurtosis of an array, and converting an array to a vector, matrix, object, or string
Data can now be plotted with plot.barplot, plot.lineplot, and plot.scatterplot, and all of the plot commands have been changed to return arrays of all of the ordered pairs of the plotted points
Calculating the angle between a point/vector and the positive x-axis on the Cartesian plane can be done with the new trig.arctan2 command
Added new vector commands for calculating reflections and refractions
Fixed calc.dfrdt which didn't work due to a slight misspelling in an if() statement

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