flatten ast, remove arena #76

	name: CI

	on:
	push:
	branches: ["dev"]
	pull_request:
	branches: ["dev"]

	env:
	CARGO_TERM_COLOR: always

	jobs:
	test:
	name: run cargo tests
	runs-on: ubuntu-latest
	steps:
	- name: check out branch
	uses: actions/checkout@v4
	- name: set up rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	- name: cargo build
	run: cargo build --verbose
	- name: cargo test
	run: cargo test --verbose
	lint:
	name: verify formatting and lints
	runs-on: ubuntu-latest
	steps:
	- name: check out branch
	uses: actions/checkout@v4
	- name: set up rust
	uses: actions-rust-lang/setup-rust-toolchain@v1
	with:
	components: rustfmt, clippy
	- name: verify formatting
	uses: actions-rust-lang/rustfmt@v1
	- name: run clippy
	run: cargo clippy --all-targets --workspace -- --deny clippy::all --warn clippy::pedantic --warn warnings

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