HeliBoard 4.2-beta1

Changes since HeliBoard 4.1:

• update shift key icon, by @devycarol (#980)
• rearrange Arabic punctuation popups and add dotted-circle markers, by @iBasim (#2537)
• add option to toggle hardware keyboard support, by @ikodbapc (#2251)
  • hardware keyboard support is still buggy, thus it's in experimental seciton
• allow clearing recent emojis, mostly by @RHJihan (#2603 / b28307d)
  • long-press emoji in recents for delete popup
  • long-press recents icon in emoji tabs to clear all recents
• add regional indicator icons to flag emojis, by @MiMoHo (#2682)
• add setting for d-pad key (like for emoji key) (#2778)
• add emojis entered from suggestion to recent emojis, by @eranl (#2062)
• fix unreachable floating keyboard handles on Android 15+, by @MiMoHo (#2692)
• fix more suggestions panel not dismissed by toolbar tap, by @eranl (#1775)
• fix crash in emoji search, by @eranl (#2326)
• fix caps issues (#2786)
• more consistent internal keyboard states (#2792)
• fix performance issues with clipboard suggestion
• improve customize icons dialog
• minor fixes and improvements