20220626

• Right drag now selects rectangle to open menu and copy only the selected region to clipboard bitmap.
• Left click shows details of the clicked icon in title bar, including filename, subpixel position, icon size, original coordinate, original size, and RGB value.
• When outlines are visible, a small yellow triangle is drawn on paths indicating path start, direction, and cw/ccw'ness.
• Zoomed rendering uses GDI+ DrawImage which is noticeably faster than GDI StretchBlt and less buggy at large scales.
• Change zoom keys to ctrl +/- to be consistent with Photoshop/Word, and +/- now changes icon size.
• Add more menu icon sizes 8, 12, 36, 120, 180; grid sizes 192, 256; and zoom up to 256px.
• Add menu options for panning to far edges.
• Increase padding around help text.
• Append default filename extension of PNG when exporting bitmap.
• Handle nonsquare icons better if they have room to fit the canvas item boundary.
• Add sample icons from icons8.com fluency set.
• Split menus for View and Size for smaller monitors (which grew too tall).
• Experimental: Ctrl+Shift arrow keys nudge the icons 1/8 pixel to see fine adjustment. F5 reloads and resets.
• Experimental: In the Size menu with Waterfall layout, shift+click a size option to set the maximum size.