Quaternions

Based on https://threejs.org/docs/#api/en/math/Quaternion

w is the factor:

[] x y z w

Under the scope quatrefoil.math:

q+ add multiple quaternions
q-
q*
&q* add 2 quaternions
&q+
&q-
q-inverse
q-conjugate
q-length
q-length2 length without call sqrt
q-scale takes a quaternion and a scalar
v+ add multiple vectors
v-
&v+ add 2 vectors
&v-
v-scale takes a vector and a scalar
&c+ add 2 complex numbers
&c-
&c*
c-length
c-length2
c-conjutate