HeliBoard 3.1-beta1

APKs removed because this version contains a bug that often prevents the keyboard from showing up when entering the password after restarting the phone.

Changes since 3.0:

• optionally suggest names of installed apps, by @devycarol (#1361, #1014)
• swipe to switch emoji categories, by @eranl (#1488, #1426)
• display toast after restoring backup, by @eranl (#1531)
• larger toolbar button and icon, by @eranl (#1556, #1412)
• make comma accessible in popups when showing TLD popups, by @eranl (#1594, #1573)
• add setting for default emoji skin tone (#817)
• add keycodes for left and right alt and ctrl keys (#1579)
• add key label "timestamp" for more accessible timestamp key
• understand special key labels for popups in simple layouts
• minor fixes and improvements