barelymusician v0.3.1

Changes:

• Added BeatsFromSeconds and SecondsFromBeats functions to the Musician API
• Added a simple LfoEffect for amplitude modulation
• Added control slope support to all effects
• Added a new PerformerDemo in Unity that makes use of Performer directly
• More bug fixes and improvements

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Full Changelog: v0.3.0...v0.3.1