[Feature request] Restore input field placeholder to "What's happening?"

[scottdotweb]

One of the first changes to the app after it was bought was that the tweet prompt, which had been "What's happening?" since the beginning, was changed pointlessly and irritatingly to "What's happening?!" It would be very good if Control Panel for Twitter could undo that.

I had a stab at it myself with CSS, and had some success by hiding the current placeholder content and adding ::before content, but couldn't quite reposition it correctly to look right on desktop and mobile. I'd say it's definitely doable, however.

Thank you for this magnificent extension.