Update docs and website (#504) #53

Job	Run time
build-native-gcc	4m 16s
build-native-llvm	5m 43s
test-native-gcc	4m 20s
test-native-llvm	4m 21s
build-aarch64-gcc	5m 3s
build-aarch64-llvm	4m 52s
build-armhf-gcc	4m 42s
build-armhf-llvm	3m 19s
build-ppc64el-gcc	4m 10s
build-ppc64el-llvm	4m 9s
build-s390x-gcc	3m 49s
build-s390x-llvm	4m 7s
build-riscv64-llvm	4m 13s
test-${{ matrix.arch }}-${{ matrix.compiler }} (qemu_cpu: "${{ matrix.qemu_cpu }}")	1s
	57m 5s

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