Gergely Bálint

Hello, I just installed this to use with neovim, where all the messages are appended at the end of the line. Even though my normal lines in vim wrap over...

This change implements an new matmul based on Armv8.6 i8mm instructions. As the change requires a nightly compiler, using the more performant version is optional, under the new `arm-nightly-feat` feature...