Add elixir chacha20 cipher implementation. Performance improvements. #4

# to view logs

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.

	name: Elixir CI

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

	permissions:
	contents: read

	jobs:
	build:

	name: Build and test
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Set up Elixir
	uses: erlef/setup-beam@v1
	with:
	elixir-version: '1.18' # [Required] Define the Elixir version
	otp-version: '27' # [Required] Define the Erlang/OTP version
	- name: Restore dependencies cache
	uses: actions/cache@v3
	env:
	base-key: '27-1.18'
	with:
	path: deps
	key: ${{ env.base-key }}-mix-${{ hashFiles('**/mix.lock') }}
	restore-keys: ${{ env.base-key }}-mix
	- name: Install dependencies
	run: mix deps.get
	- name: Run tests
	run: mix test

Provide feedback