Benchmarks comparing Existing .NET methods with extension methods in this library and manually written solutions

[Guiorgy]

We should have comprehensive benchmarks comparing the performance of this library against existing solutions and manually written optimized code to display the information in the README.md or a separate file reference from the readme.

Edit: can you add this to the backlog for now

[dragon7307]

Sure, I am intending to do some wiki pages anyway.