Adapt tracing to new std.logger. #20

	name: Run all D Tests
	on: [push, pull_request]

	jobs:
	unittest:
	name: Pegged unit tests
	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest, macOS-latest]
	dc: [dmd-latest, ldc-latest, dmd-2.087.1, dmd-2.090.1, ldc-1.17.0, ldc-1.20.0]
	exclude:
	# dyld[2053]: missing symbol called
	- { os: macOS-latest, dc: dmd-2.087.1 }
	# ld: section __DATA/__thread_bss has type zero-fill but non-zero file offset
	- { os: macOS-latest, dc: dmd-2.090.1 }
	# needs -lowmem
	- { os: windows-latest, dc: dmd-2.090.1 }

	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v2

	- name: Install D compiler
	uses: dlang-community/setup-dlang@v1
	with:
	compiler: ${{ matrix.dc }}

	- name: Run tests
	run: dub -q test

	examples:
	name: Examples unit tests
	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest, macOS-latest]
	dc: [dmd-2.101.2] # Avoid https://dlang.org/changelog/2.102.0.html#build-cache
	example: [arithmetic, csv, json, numbers, python, simple_arithmetic, strings, xml]
	exclude:
	# out of memory
	- { example: python }

	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v2

	- name: Install D compiler
	uses: dlang-community/setup-dlang@v1
	with:
	compiler: ${{ matrix.dc }}

	- name: Test example
	run: dub test :${{ matrix.example }}

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