Key Reassignment / Custom Keyboard Creation

[HawksDarris]

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Describe the feature request below

MessageEase Behavior

In the settings of the MessageEase keyboard, you can change the symbol for each key and each swipe. This app has a good selection of keyboards in the settings, but it does not allow particularized customization, so if I want to change the & to §, I am not able to unless I do a pull request with the .kt file, but it would be nice to do it from within the app.

MessageEase could also generate a shareable config that way. It looked like a bunch of random letters and whatnot, but it was usable.

[dessalines]

Dupe of #234