Closes #5

• Add
• And
• BitShift
• Div
• Equal
• Mul
• Pow
• Sub

Here is the comparison of performances for Add operator in percents (%). It is representative of perfomance gains for other elementwise operators.

Default size of both inputs was [64,64,64,64]

I also changed Catch2 version from 3.0.1 to 3.7.1