0.15.0

⚠️⚠️⚠️ This release enables App Sandbox and moves all preferences and copied items history to a new sandboxed location. The migration is seamless for this version, but older versions of Maccy won't continue to work. They will default to original preferences and empty history. ⚠️⚠️⚠️

• Fixed a regression when menu bar icon won't be highlighted after clicking on it (#146)