Adafruit-circuitpython-adafruitio

This release includes:
* Migrating this repository from Travis to GitHub Actions. This has no effect on the behavior of the code itself.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).

To use in CPython, `pip3 install adafruit-circuitpython-adafruitio`.

Read the [docs](http://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.

* https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/27 Subscribing and unsubscribing to/from feeds will now correctly execute user-defined callback methods in code
* MQTT Simpletest example updated for `subscribe` and `unsubscribe`.
* https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/21 Properly close HTTP responses and return only the JSON data.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.

Library has been updated to reflect changes made to MiniMQTT release [1.1.2](https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT/tree/1.1.2)

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.

**BREAKING Change**
* `RESTClient` is now `IO_HTTP` to conform with `IO_MQTT` naming. Examples have been changed to reflect this change.

**Changes:**
* Examples folder has been split into `mqtt` and `http` to organize examples.

* a MQTT Class, `IO_MQTT` has been added to `adafruitio` for accessing the Adafruit IO MQTT API with a CircuitPython Adafruit IO client.
* Examples of using this class can be found here: https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/tree/master/examples/mqtt

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.

Examples updated to run on boards with built-in AirLift ESP32 Co-Processors (such as the PyPortal or Metro M4 WiFi Lite) without editing the example code.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.

This release adds Adafruit IO CircuitPython support for the new Adafruit IO Time API.

* Calling `receive_time` returns **localized** time to the CircuitPython RESTClient, based on the device's IP address, as a struct_time](https://circuitpython.readthedocs.io/en/3.x/shared-bindings/time/__init__.html#time.struct_time) 19

* **Note**: The previous /time endpoint returned a plaintext response, instead of json. This release removes plaintext-handling from the library.
* Updated all examples to match the Adafruit IO naming scheme in the PyPortal's `secrets.py` file.

To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle).

Read the [docs](https://circuitpython.readthedocs.io/projects/adafruitio/en/latest/) for info on how to use it.