* Update sleepyq to 0.7
Fixes crash when working with a single sleeper.
* sleepiq: Handle null side definitions
These happen if no sleeper is defined for a side of the bed. Don't
create sensors for null sides; they'll crash every time we try to use
them.
* sleepiq: Fix urls mocked to match sleepyq 0.7
* sleepi: Fix test_sensor.TestSleepIQSensorSetup
Sleepyq 0.7 throws on empty strings, so we have to specify them.
* sleepiq: Test for ValueError thrown by sleepyq 0.7
* sleepiq: Drop no longer used HTTPError import
* sleepiq: Add tests for single sleeper case
* sleepiq: Shorten comments to not overflow line length
* sleepiq: Use formatted string literals for adding suffixes to test files
* sleepiq: Use str.format() for test suffixing
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