[Merge] lp:~ricmm/platform-api/orientation-sensor into lp:platform-api

[Ricardo Salveti]

Review: Needs Information

Thought we wanted to try to avoid float values as arguments, do we really want to land all these new functions with float arguments (over hybris)?
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https://code.launchpad.net/~ricmm/platform-api/orientation-sensor/+merge/221025
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