Am43

- Fixed [upper case address search bug](https://github.com/breitburg/python-am43/issues/6)

Now you can specify «HCI» device by it's index like that:

python
import am43
blind = am43.search('xx:xx:xx:xx:xx:xx', device=1)


- Minor internal changes

> **Warning**
> This release is breaking backwards compatibility!

This release brings ability to search for multiple blinds at once through the search function, implements Blind.disconnect methods and bug fixes.

- Now to initiate blind you need to use `am43.search` function that argues addresses for target blinds
- Use `Blind.disconnect` method to disconnect from the current blind
- Fixed bugs with the endless looping while connecting

- Added ability to obtain properties

- Fixed reconnection bug

Initial release