* Added support for MCP23017 I2C GPIO extender.
* Updated .coveragerc to exclude mcp23017 component from tests.
* Generated CODEOWNERS for mcp23017 usign script.
* Removed .svn folder that had been accidentally uploaded.
* Added link to www.home-assistant.io docs in manifest.json
* Fixed logic error in switch platform.
* Cleaned up code and removed unnecessary should_poll() function.
* Limited the options for pull mode to UP and DOWN
* Fixed line too long in binary sensor.
* Fixed line too long on switch.py
* Changed to setup_platform.
* Reorder constants
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