Garminconnect

* Added get hydration data

* Added get_device_last_used
* Added get personal record
* Added multiple new activity urls
* Added KMS download option
* Added get_activities_by_date method
* Updated README

* Added csv download
* Added get_devices and get_device
* Updated README examples

* Added steps data

* Fixed login call
* Added install requirements
* Matched release with version on PyPi

* Fixed stats_and_body_composition concatenate bug
* Added example code to README