github actions

add test action

move away from x86_64 on macOS

go back to windows build

update notes and appveyor.yml

work on clangCL version

update changes

more clang formatting

add .clang-format

fix travis-ci

move to AlmaLinux8 based manylinux_2_28 for Linux.

add changes

update version number

fixup environment

universal build for macos