use double hash map for internal cache #42

	name: Test default (rusqlite)

	on:
	pull_request:
	types:
	- ready_for_review
	push:
	branches:
	- '*'
	env:
	CARGO_TERM_COLOR: always
	jobs:
	run-tests:
	runs-on: ubuntu-22.04
	steps:
	- name: Check out repository code
	uses: actions/checkout@v3
	- name: Setup python
	uses: actions/setup-python@v4
	with:
	python-version: '3.11'
	- name: Install tesh
	run: \|
	pip install tesh
	- name: Setup node
	uses: actions/setup-node@v4
	with:
	# See https://github.com/actions/setup-node for further options
	node-version: '18.19'
	- name: Run tests
	run: \|
	make test_rusqlite

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