This fixes #1 by adding support for larger stroke animations.
On the command line, you can now specify the optional /imgw: and /imgh: arguments. These each take pixel values and default to 109 to maintain backwards compatibility.
Be sure to set these so each character can be drawn into a box that is square (i.e. set imgh to the same value as imgw). If you don't, the animation probably won't scale properly.