ESPGeiger v0.9.6

2 major bug fixes below, please update - note you may need to USB flash.

Bugfixes

• Fix 50-day rollover stranding in Webhook/GMC/Radmon/Thingspeak posters v0.8.0+ - important update
• Favicon reverted to SRAM — fixes boot-loop in WiFiManager portal/OTA, may require USB flashing
• Push button reworked: 5 ms Ticker poll replaces EasyButton

Enhancements

• Dead-time correction re-enabled on Test, gated at 50 CPS
• External blip LED: runtime pin + pulse-width pref across builds
• EasyButton dependency removed