HeltecV4 'Ultra' firmware (ver 11.0)

v11.0 changes:

* new touch drag scrolling, and map panning

* Channel names now up to 31 chars

* Path dialog, custom path ‘bad format’ bug fix

* off-grid EU freq now 869.495

* Map, Scan Local map visualisation

* new radio presets

* Channel enable/disable preserves key

* misc UI cleanups

* Message details screen: new “Add Contact” menu

v10.1 changes:

* long tap copy/paste bug fix

* fix for Path dialog "bad format" bug

* Message details screen now formats multi-line messages

* 'Heard By' names bug fix

* multi-byte path DM send timeout bug fix

* Snake mini game!

* new direct-tap UI

* new 'Get Telemetry...' menu in conversation screens

* better battery gauge on home screen

* Channel scope, select "*" for un-scoped

v9.7 changes:

* NEW UI: tap directly on items, no cursor scrolling

* UI theme: Light, Dark or Auto.

* Custom accent color support

* Default Scope region support

* new advert sounds suppressed in kid mode.

* Long-press on Login button for 'Reset Path' then Login

v9.4 changes:

* map tiles support ('LFS' variant only)

* Display: map theme: Light, Dark, Auto

* Discover, node details "Delete" menu

v9.2 changes:

* multibyte path hash support

v9.1 changes:

* Off-grid (client repeat) mode

* faster map rendering

* Bandwidth 500 support

v9.0 changes:

* new UI: customisable home icon grid, and new icon grid menus

* Discover list now overwrites oldest entry if full

* power savings: batt life now ~30% longer

* region names now without '#'

v8.3 changes:

* default fonts now UTF-8 with non-Latin support

* channel names now up to 11 chars

v8.2 changes:

* updated UI colour scheme

* new Regions screen, with "Scan Local" menu

* new "Owner Info" menu, from Discover > Scan Local

v8.1 changes:

* ENTER key fix. (IO35 button)

* Kid Mode bug fix

* Group channel chat: new 'Set Scope...' menu

* Support for mapping Polish characters to simple Latin characters

* Room messages rendering fix.

* Radio presets updated.

v8.0 changes: