fix: Change numerical key `insert` behavior #241

	name: CI

	on: [push, pull_request]

	env:
	RUSTFLAGS: -Dwarnings

	jobs:
	fmt_and_docs:
	name: Check fmt & build docs
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: stable
	components: rustfmt
	override: true
	- name: rustfmt
	run: cargo fmt --all -- --check
	- name: docs
	run: cargo doc --no-deps

	build_and_test:
	name: Build & Test
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	rust: [1.56.0, stable]
	os: [ubuntu-latest, macOS-latest, windows-latest]

	steps:
	- uses: actions/checkout@v1
	- name: Install Rust
	uses: actions-rs/toolchain@v1
	with:
	profile: minimal
	toolchain: ${{ matrix.rust }}
	components: clippy
	override: true
	- name: Clippy
	run: cargo clippy --all -- -D warnings
	- name: Run tests
	run: cargo test --all --verbose

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