Redis+Trio support

quart_session/redis_trio/README.md

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+
+
+Code here is borrowed from [alekseyev/trio-redis](https://github.com/alekseyev/trio-redis), which was originally developed over at [Bogdanp/trio-redis](https://github.com/Bogdanp/trio-redis).
+
+Since it has no active maintainers and no PyPI package - I am including it as-is.
+
+## Usage
+
+```python3
+from quart_session.redis_trio import RedisTrio
+cache = RedisTrio(
+    addr=b"10.0.0.3", port=6379, password=b"foo")
+await cache.connect()
+
+await cache.setex(key="foo", value=42, seconds=300)
+await cache.get("foo")
+```
+
+Or,
+
+```python3
+async with RedisTrio() as cache:
+    await cache.set("foo", 42)
+    await cache.get("foo")
+```
+
+## Future work
+
+If someone makes a Redis+Trio client that supports connection pooling, we can switch to it.
+
+
+```
+:copyright: (c) 2017 by Bogdan Paul Popa.
+:copyright: (c) 2019 by Oleksii Aleksieiev.
+:copyright: (c) 2020 by dsc.
+:license: BSD, see LICENSE for more
+```