droppable-pin 0.1.1

The eponoymous `droppable_pin!` macro around a given `let var = pin!()` declaration allows invoking `pin_drop!` and `pin_set!` on the given `var`, which have in turn been designed to avoid silly borrow-checking errors.
Documentation
# Templated by `cargo-generate` using https://github.com/danielhenrymantilla/proc-macro-template
name: Cron CI

on:
  schedule:
    - cron: '0 8 * * 1,5'

jobs:
  # == TEST == #
  test-no-ui:
    name: (Check & Build &) Test
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - macos-latest
          - windows-latest
        rust-toolchain:
        # Future-proof against non-locked regressions.
          - stable
        # Future-proof against compiler-regressions
          - beta
          - nightly
        cargo-locked: ['', '--locked']
        exclude:
          # Already tested by PR CI.
          - rust-toolchain: stable
            cargo-locked: '--locked'
          # Cursed auto-`nightly`-detection logic from dtolnay's crates may break `--locked`.
          - rust-toolchain: nightly
            cargo-locked: '--locked'
    steps:
      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust-toolchain }}
        id: installed_toolchain

      - name: Override toolchain just in case.
        run: rustup override set ${{ steps.installed_toolchain.outputs.name }}

      - name: Clone repo
        uses: actions/checkout@v4

      - name: Update `Cargo.lock`
        if: matrix.cargo-locked != '--locked'
        run: cargo update -v

      - run: cargo test ${{ matrix.cargo-locked }} --features docs-rs
        env:
          RUSTC_BOOTSTRAP: 1

      # - run: cargo test-ui
      #   if: matrix.rust-toolchain != '1.85.0'
      #   env:
      #     RUSTC_BOOTSTRAP: 1