Feature request: Custom context menu for main app window

[TriVoxel]

I'd love to see a custom context menu designed for the main app window, for when the user right clicks a note. Here's what I think would be useful options to have:

• Ability to change note color
• Ability to copy note to clipboard (prefferably rich text so it can be pasted with formatting in other programs)
• Ability to delete note
• Ability to rename note (not currently a feature, but planned? Add a title to a sticky note #40)