Add CI and codowners

.github/CODEOWNERS

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+*       @erubboli @TheQuantumPhysicist

.github/workflows/build.yml

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+name: build
+
+on:
+  push:
+    branches:
+      - "**" # target all branches
+  pull_request:
+    branches:
+      - master
+
+env:
+  CARGO_TERM_COLOR: always
+  RUST_LOG: debug
+  RUST_BACKTRACE: full
+
+jobs:
+  build_windows:
+    runs-on: windows-latest
+    # if: github.ref == 'refs/heads/master'
+    steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Install python toml package
+        run: python3 -m pip install toml
+      - name: Install rust
+        run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain $(python3 ./build-tools/rust-version-extractor/rust-version-extractor.py)
+      - name: Build
+        run: cargo build --release --locked
+      - name: Run tests
+        run: cargo test --release --workspace
+      - name: Run doc tests
+        run: cargo test --release --doc
+
+  build_ubuntu:
+    env:
+      ML_CONTAINERIZED_TESTS: 1
+    runs-on: ubuntu-latest
+    # if: github.ref == 'refs/heads/master'
+    steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Update local dependency repositories
+        run: sudo apt-get update
+      - name: Install dependencies
+        run: sudo apt-get install -yqq --no-install-recommends build-essential python3 python3-toml podman build-essential pkg-config libssl-dev
+      - name: Install rust deps
+        run: sudo apt-get install -yqq build-essential pkg-config libssl-dev
+      - name: Install rust
+        run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain $(python3 ./build-tools/rust-version-extractor/rust-version-extractor.py)
+      - name: Build
+        run: cargo build --release --locked
+      - name: Run tests
+        run: cargo test --release --workspace
+      - name: Run doc tests
+        run: cargo test --release --doc
+
+  build_macos:
+    runs-on: macos-latest
+    # if: github.ref == 'refs/heads/master'
+    steps:
+      - name: Checkout repository and submodules
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: Install python toml package
+        run: python3 -m pip install toml
+      - name: Install rust
+        run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain $(python3 ./build-tools/rust-version-extractor/rust-version-extractor.py)
+      - name: Build
+        run: cargo build --release --locked
+      - name: Run tests
+        run: cargo test --release --workspace
+      - name: Run doc tests
+        run: cargo test --release --doc

build-tools/rust-version-extractor/rust-version-extractor.py

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+#!/usr/bin/env python3
+'''
+A simple program that extracts the rust version and prints it to stdout.
+To be used in CI.
+'''
+
+import os
+import re
+import sys
+import toml
+import itertools
+
+def get_rust_version():
+    cargo_toml_root = toml.load('Cargo.toml')
+
+    if "package" not in cargo_toml_root:
+        raise KeyError("'package' not found in 'workspace' in root")
+    package_settings = cargo_toml_root['package']
+
+    if "rust-version" not in package_settings:
+        raise KeyError("Rust version is not specified in [package]")
+
+    version = package_settings["rust-version"]
+
+    # Unfortunately, rust-init doesn't support completing the version on its own, so we just pad with whatever works
+    if len(version.split('.')) == 2:
+        version = version + '.0'
+
+    return version
+
+if __name__ == "__main__":
+    rust_version = get_rust_version()
+    print(rust_version)