Graphmath.Vec2

`add_vec2` is used to add a vec2 to another vec2.
It takes two vec2s and returns a vec2 which is the element-wise sum of those lists.

`compare_vec2` is used to check whether or not two vectors are within a length of each other.

`create_vec2` is used to create a 2d vector.

It takes a list of numbers and converts it into an array of form [x,y].

`dot_vec2` is used to find the inner product (dot product) of one vec2 and another.

Passing it two vec2s will cause it to return the inner product of those two vec2s.

`length_manhatten_vec2` is used to find the Manhattan (L1 norm) length of a vector.

The Manhattan length is simply the sum of the components.

`length_squared_vec2` is used to find the square of the length of a vector.

In many cases, this is sufficient for comparisions and avaoids a sqrt.

`length_vec2` is used to find the length (L2 norm) of a vector.

The length is the square root of the sum of the squares.

`lerp_vec2` is used to linearly interpolate between two given vectors.

The interpolant is on the domain [0,1]. Behavior outside of that is undefined.

`normalize_vec2` is used to find the unit vector with the same direction as the supplied vector.

This is done by dividing each component by the vector's magnitude.

`perp_prod_vec2` is used to find the perpindicular product of two vec2s.

The perpindicular product is the magnitude of the cross-product between the two vectors.

`project_vec2` projects one vector onto another, and returns the resulting image.

`rotate_vec2` is used to rotate a vec CCW about the +Z axis a given number of radians.

`scale_vec2` is used to perform a scaling on a vec2.

Passing it a single number will cause all elements of the vec2 to be multipled by that number.
Passing it a vec2 will cause each element of to be multiplied by the corresponding element of the scale vec2.

`subtract_vec2` is used to subtract a vec2 from another vec2.
It takes two vec2s and returns the difference of the two.