fix(compiler): str += const str now use proper runtime function #88

	on:
	push:
	branches:
	- main

	env:
	PYTHONIOENCODING: utf-8
	PYTHONLEGACYWINDOWSSTDIO: utf-8

	jobs:
	check-ubuntu-x86_64:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-20.04, ubuntu-22.04]
	steps:
	- name: Checkout git repo
	uses: actions/checkout@v2
	with:
	path: main
	- name: Preparations
	working-directory: main
	run: \|
	# The 'submodules' option for actions/checkout@v2 doesn't
	# seem to work. So we manually sync it just in case.
	git submodule init
	git submodule update
	sudo apt update
	sudo apt install -y cmake ninja-build g++
	mkdir -p compiler/cmake-build-release
	- name: Configuring CMake
	working-directory: main/compiler/cmake-build-release
	run: \|
	cmake -G Ninja -DCMAKE_BUILD_TYPE=Release ../
	- name: Build
	working-directory: main/compiler/cmake-build-release
	run: \|
	ninja all
	- name: Test
	working-directory: main/compiler/cmake-build-release
	run: \|
	ninja test

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