double % in the main keyboard panel and no _

[AnthillSudoku]

Describe the bug
The main keyboard panel has two %, one if you long press "q" and the other at "f".
This happen both in English and Italian, at least.

Meanwhile, there is no "_" in the main pane; this simbol is quite useful if you write in markdown.

I suggest to use "_" when long pressing "f" (as gboard does)

Screenshots

Thanks for the app
Luca