0.02: Make minor adjustments to widget, and discard stale weather data after a configurable period.
0.03: Fix flickering last updated time.
0.04: Adjust "weather unknown" message according to Bluetooth connection.
0.05: Add wind direction.
0.06: Use setUI for launcher.
0.07: Add theme support and unknown icon.
0.08: Refactor and reduce widget ram usage.
0.09: Fix crash when weather.json is absent.
0.10: Use new Layout library
0.11: Bangle.js 2 support
0.12: Allow hiding the widget
0.13: Tweak Bangle.js 2 light theme colors
0.14: Use weather condition code for icon selection
0.15: Fix widget icon
