Add Unexpected Keyboard 1.9.1 (11)

• The app complies with the inclusion criteria
• The original app author has been notified (and does not oppose the inclusion)
• All related fdroiddata and RFP issues have been referenced in this merge request
• The upstream app source code repo contains the app metadata (summary/description/images/changelog/etc) in a Fastlane or Triple-T folder structure
• Builds with fdroid build
• Releases are tagged

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Hi! I'd like to include this application into the repository. I'm the author of the application.

The app builds on my machine but I just noticed it requires Android Build Tools version 30.0.3. One of the tools, dx, seems to be gone in version 31.0.0. Any idea how I could workaround this ?