Release 0.13.0

Power-on indicator: when the display doesn't stay lit, the green LED flashes
for 100 ms every 3 s so a dark screen doesn't leave you wondering whether the
radio is still on. It pauses while receiving, transmitting or muted. Docs
(README, MANUAL, CHANGELOG) updated.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JCK7s3WnwRHZNtQLdyyWBu

CHANGELOG.md

@@ -7,6 +7,10 @@ single running list until the first versioned release.
 
 ## Unreleased
 
+_Nothing yet._
+
+## 0.13.0
+
 - **Power-on indicator** — when the display doesn't stay lit (any backlight mode
   where the screen goes dark, including **None**), the green LED flashes for
   **100 ms every 3 s** so it's obvious the radio is still switched on. The flash

MDUV380_firmware/application/include/freetrxVersion.h

@@ -5,9 +5,9 @@
 #define _FREETRX_VERSION_H_
 
 #define FREETRX_VERSION_MAJOR   0
-#define FREETRX_VERSION_MINOR   12
+#define FREETRX_VERSION_MINOR   13
 #define FREETRX_VERSION_PATCH   0
 
-#define FREETRX_VERSION         "0.12.0"
+#define FREETRX_VERSION         "0.13.0"
 
 #endif // _FREETRX_VERSION_H_