Add sort direction, fixup readme #9

	name: ci-push
	on: [push]
	jobs:
	build-linux:
	runs-on: ubuntu-24.04
	steps:
	- uses: actions/checkout@v4
	- name: init
	run: \|
	sudo apt update -yqq && sudo apt install -yqq ninja-build gcc-14
	sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 100
	sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-14 100
	- name: configure gcc
	run: cmake -S . --preset=default -B build
	- name: configure clang
	run: cmake -S . --preset=ninja-clang -B clang
	- name: build gcc debug
	run: cmake --build build --config=Debug
	- name: build gcc release
	run: cmake --build build --config=Release
	- name: build clang debug
	run: cmake --build clang --config=Debug
	- name: build clang release
	run: cmake --build clang --config=Release
	- name: test gcc debug
	run: cd build && ctest -C Debug
	- name: test gcc release
	run: cd build && ctest -C Release
	- name: test clang debug
	run: cd clang && ctest -C Debug
	- name: test clang release
	run: cd clang && ctest -C Release
	build-windows:
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v4
	- name: configure
	run: cmake -S . --preset=vs22 -B build
	- name: build debug
	run: cmake --build build --config=Debug
	- name: build release
	run: cmake --build build --config=Release
	- name: test debug
	run: cd build && ctest -C Debug
	- name: test release
	run: cd build && ctest -C Release

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