Adafruit-circuitpython-adafruitio

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.

* Append a User-Agent (Adafruit-IO CircuitPython specific) for this library onto existing request headers for the server to identify CircuitPython clients.
* Added a `new _create_headers` method for HTTP requests to reflect correct header encoding in the Adafruit ESP32SPI dependency (https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI/releases/tag/1.3.4).

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 library now supports ESP_ATControl's WiFiManager for using an ESP32 co-processor over UART.
(https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/15)
* [Added usage example](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_esp_at.py)
* Updated README.

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.

* Added `precision` kwarg to `send_data` to truncate floating point values to specified `precision` decimal places before the payload is created and sent to Adafruit IO. https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/13

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**: Updated examples to reflect updated NeoPixel abstraction in ESP32SPI (https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/14).
* Added an analog input example for sending `analogio` sensor data to Adafruit IO (https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/11)
* Updated examples for PyPortal pin definitions (https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/10)
* Updated weather example to fix incorrect humidity (https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/pull/7)

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.

Initial release of Adafruit IO CircuitPython.

* This library will allow a WiFi-connected CircuitPython microcontroller to communicate with the [Adafruit IO REST API](https://io.adafruit.com/api/docs).
* Supports WiFi using the [ESP32SPI CircuitPython library](https://github.com/adafruit/Adafruit_CircuitPython_ESP32SPI)
* Added examples for interacting with [Adafruit IO Groups](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_groups.py), [sending data to feeds](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_feeds.py), [including metadata (such as timestamps and location) with data sent to IO](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_metadata.py), interacting with [digital outputs](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_digital_out.py), and getting weather data from the Adafruit IO Plus [Dark Sky service](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO/blob/master/examples/adafruit_io_simpletest_weather.py)

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.