Move some functionality into "internal" namespace #65

	name: CI - MSVC && GCC

	on: [push]

	jobs:
	build_windows_linux:
	strategy:
	fail-fast: false
	matrix:
	os: [windows-latest, ubuntu-latest]
	build_type: [Release, Debug]

	runs-on: ${{ matrix.os }}

	steps:
	- uses: actions/checkout@v2

	- name: Setup dependencies
	if: startsWith(matrix.os, 'ubuntu')
	run: \|
	sudo apt update
	sudo apt install g++-11

	- name: Create Build Environment
	# Some projects don't allow in-source building, so create a separate build directory
	# We'll use this as our working directory for all subsequent commands
	run: cmake -E make_directory ${{github.workspace}}/build

	- name: Configure CMake
	# Use a bash shell so we can use the same syntax for environment variable
	# access regardless of the host operating system
	shell: bash
	env:
	CXX: g++-11
	working-directory: ${{github.workspace}}/build
	# Note the current convention is to use the -S and -B options here to specify source
	# and build directories, but this is only available with CMake 3.13 and higher.
	# The CMake binaries on the Github Actions machines are (as of this writing) 3.12
	run: cmake $GITHUB_WORKSPACE -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}

	- name: Build
	working-directory: ${{github.workspace}}/build
	shell: bash
	# Execute the build. You can specify a specific target with "--target <NAME>"
	run: cmake --build .

	- name: Test
	working-directory: ${{github.workspace}}/build
	shell: bash
	# Execute tests defined by the CMake configuration.
	# See https://cmake.org/cmake/help/latest/manual/ctest.1.html for more detail
	run: ctest -C $${{ matrix.build_type }}

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