Methods in `Simplifier.cs` that only access read-only members were made `readonly` #828

	name: 'C#/Kernel Build'

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- '*'

	jobs:
	AngouriMath:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [windows-latest, ubuntu-latest, macos-latest]
	steps:
	- uses: actions/checkout@v2
	with:
	submodules: 'recursive'
	- name: Setup .NET 7
	uses: actions/setup-dotnet@v1
	with:
	dotnet-version: '7.0.100'
	include-prerelease: true

	- name: Build AngouriMath
	run: \|
	cd Sources/AngouriMath/AngouriMath
	dotnet build

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