add Command Palette
Hey everyone! I would like to suggest this feature that has been quite popular lately in many applications: - Command Palette: [Atom](https://flight-manual.atom.io/getting-started/sections/atom-basics/#command-palette), [VSCode](https://code.visualstudio.com/docs/getstarted/userinterface#_command-palette) - Find Action: [IntelliJ IDEA](https://blog.jetbrains.com/idea/2009/06/find-action-saves-time/) - Action Search Dialog: [GIMP](https://wiki.gimp.org/index.php/Specs:Action_Search_Dialog) VSCode Command Palette: ![command-palette](/uploads/e9179e22c48349a5d736888a065401e8/command-palette.png) This feature eliminates the need to remember shortcut keys (and yet also helps learning them!), and in more advanced implementations (e.g. VSCode) retains usage history and shows recently used tools/options/menus by default so that the user can get familiar with their names and easily access the tools they need the most. 👌 Personally it would make a lot of difference for me, and I would be really excited to hear if you're also interested in this, so please let me know what you think! search terms: gsoc 2020 gsoc2020
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