Wondermarin

Add options.fit to other methods print images

5

**This is not only useful for circular images.** Add `options.fit` in `Canvas#printImage`. Add `options.fit` in `Canvas#printRoundedImage`. Thank in advance.

[Feature]: User-Installable apps support

3

### Feature? Hi there! As of March 18th, [user-installable apps are now available](https://discord.com/developers/docs/change-log#userinstallable-apps-preview). I tried to find out if this library supports the new feature, but couldn't find anything relevant...