v0.2.0

• Needs tsquare 0.13.2 or later (it was 0.12.2). Boards get tsquare's renderer fixes from 0.12.3 to 0.13.2.
• A board's image size and its zoom view's screen buttons are exact on boards with notes: they come from tsquare's measureBoardLayout, which measures notes as drawn, next to the SVG (in markdown-it-tsquare's worker). boardLayout's estimate could be a line or more off for a note that wraps differently than its length suggests, so the image was scaled into a slightly wrong box.