graphannis-malloc_size_of 2.0.0

This is a fork of the `malloc_size_of` crate, which is part of the Servo codebase, to make it available to the graphANNIS corpus search library as dependency.
Documentation
name: Automated tests
on: push
jobs:
  test_linux:
    name: Execute automated tests on Ubuntu Linux
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
      - uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
      - run: cargo build --all-features --verbose
      - run: cargo test --all-features --verbose
  test_windows:
    name: Execute automated tests on Windows
    runs-on: windows-2019
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
      - uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.toml') }}
      - run: cargo build --all-features --verbose
      - run: cargo test --all-features --verbose
  test_mac:
    name: Execute automated tests on OSX
    runs-on: macos-10.15
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
      - run: cargo build --all-features --verbose
      - run: cargo test --all-features --verbose