Xled

------------------
* Major changes:

* Add realtime UDP protocol including unit tests
* Add several missing rest calls in ControlInterface
* Unit test all methods in ControlInterface

* Other bugfixes and improvements:

* Provide a short guide how to install packages from PyPI
* Provide `python_requires` in setup.py
* Add project URLs to metadata
* Corrected import of security, and removed some old comments
* Make encrypt_wifi_password work also with python3
* More flexible parameters to set_mqtt_config
* Enable options in set_network_mode_ap and _station
* Enable relative values in set_brightness
* Make firmware_update compatible with Generation II
* Fix error in `python setup.py install` (fix 82)
* Use generic Exception in discover module
* On Python 2.7 ignore VCR deprecation warning
* On Python 2.7 ignore cryptography deprecation warning
* Fix dependencies for python 2.7
* Don't debug log reapped devices
* Time format as hardcoded value instead of locale specific
* Raise an exception with a error message firmware update failed
* Get MAC address from gestalt API call
* Always UTF-8 decode response from JOINED event in discovery
* Log instead of print in discovery interface and return on unknown event
* If hw_address wasn't possible to resolve don't use None as a peer
* Configure all loggers used by CLI with cli_log.basic_config()
* Make response assertions less strict
* Reformat setup py so tox tests pass

* Documentation updates:

* Update example in README to use reflect change in API
* Add Gitter badge
* Update of xled and xled-docs should be done hand in hand
* Remove Enhancement section from Contributing as there is no such thing
* Write down support for OS, devices, python and guide to CLI
* Rewrite README file
* Fix documentation for set_led_movie_config

* Changes in CI/CD:

* Run linters as GitHub action
* Use generic python3 in black pre-commit config
* Configure pytest to collect tests only from tests/
* Use GitHub action for PyPI publish
* Update URL for CI from Travis to GitHub actions
* One more place to update supported python versions
* Make Travis environment python again
* Remove non-deploy section from travis.yml
* Fix typo in travis.yml dep install
* Ignore Flake8 error on Sphinx configuration file
* Run pytest directly from Tox
* Add bug report template for GitHub issues and reference it
* Switch to token authentication for deployment to pypi through Travis

* Changes in dependencies and python versions:

* Add 3.10 to supported Python versions
* Update coverage from 4.4.2 to 5.5
* Update pip from 20.2.3 to 21.1
* Update travis.yaml: remove python 3.5 and add 3.8 and 3.9
* Add 3.9 to supported Python versions
* Drop Python 3.5 support
* Drop compatibility code for Python version 3.4
* Add Python 3.8 as a supported language
* Update pip from 19.0.3 to 20.2.3
* Update sphinx from 1.6.5 to 3.0.4

------------------
* Make tests with tox pass again so release can be automatically deployed:

* Add Black reformatter to tox linter envs
* Tox config: new linters env to run Flake8
* Tox config update: Flake8 against tests/ and setup.py as well
* Make xled.compat pass Flake8 for F821 undefined names
* Refactor beacon processing of seen/new peer into separate methods
* Reformat test_control test with black
* Make tox install test-only requires
* Use conditional deployment to pypi with travis only from master

------------------
* Drop support for python 3.4
* Explicitly specify Linux as only operating system
* Automatically refresh token if expired
* Add brightness management
* Check response is OK before trying to decode JSON from body
* Use id instead of name in discovery
* Device class representing the device
* Get network status in control interface
* Use response from alive device to check if we reached discover timeout
* Provide generator xdiscover() to return all or specific devices
* Support timeout for discovery
* When agent stops stop ping task and processing responses
* Provide close() for UDPClient and use it on DiscoveryInterface.stop()
* Do not continue receiving more data if UDP recv timeouts
* Other bugfixes and improvements:

* Fix assertions
* Expose HighControlInterface on package level
* If ApplicationError is raised, store value of response attribute
* Allow disable/enable of brightness without value change
* Update wheel from 0.30.0 to 0.33.1
* Update pip from 9.0.1 to 19.0.3
* Add python 3.6 and 3.7 to Travis config

------------------

* CLI to update firmware
* Example of library call and CLI usage
* Option to select device by hostname in CLI and ping in discovery
* New HighControlInterface() to aggregate and abstract low-level calls
* CLI and HighControlInterface way to set static single color
* Other bugfixes and improvements:

* Fix typo in CLI error message
* Print message before discovery on CLI
* Refactor: join consecutive strings on same line
* Print better message after device has been discovered over CLI
* Regenerate documentation index of a package
* Fix typo in control.set_mode() documentation
* Return named tuple in discover.discover()
* Use discovery and named tuple in example of library use
* Do not assert return value in ControlInterface.set_led_movie_full()
* Return ApplicationResponse for ControlInterface.set_led_movie_config()
* Return ApplicationResponse for control.ControlInterface.led_reset()
* Remove unneeded debug message from DiscoveryInterface.__init__()

------------------

* Support Python 3.6 and 3.7 including tests and documentation
* Python 3 support with pyzmq >= 17.0 and Tornado 5
* Remove redundant udplib
* Other Python 3 compatibility:

* In Python 3+ import Mapping from collections.abc
* Python 3 compatible encoding of discovered IP and HW address and name
* Make xled.security.xor_strings() compatible with Python 2 and 3
* Treat PING_MESSAGE as bytes to simplify handling Python 2 and 3

* Other bugfixes and improvements:

* Remove mention of PyPy from docs as it wasn't ever tested on it
* Improve robustness with sending messages from agent to interface
* Escape display of binary challenge in debug log of xled.auth
* Ignore (usually own) PING_MESSAGE on network when handling responses

------------------

* Update changelog for version 0.3.0
* Update description in setup.py to refer to CLI
* Fix JSON payload sent to server for firmware update.