v5.1.1: Faster Dispatch & Better Docs in 🐍

Most importantly, this is the first SimSIMD release deprecating Python 3.6, released in 2016. Now, 8 years later, we deprecated it to more broadly utilize the Fast Calling Convention. Read more in a dedicated article on the cost of function arguments parsing in Pyhton - 35% discount on keyword arguments 😄

• Thanks to @stuartatnosible for noticing dtype= issues 👓
• Thanks to @MarkReedZ for accelerating bf16 dot-product on Arm 🦾