Changed norm function. Edited formatting.
Changed norm function. Edited formatting.

Changed the norm function to use SciPy’s Euclidean function rather than
bumpy’s norm function. For whatever reason in this particular document
+ & - were not acting as addition and subtraction for vectors, while
they seem to work fine in the other documents… (?)

Comments and formatting were also edited to give an accurate
description of the code.

SageMay/Cross_Bridge_Fluid_Sim