README: Added support for RV32EC & WCH CH32V003 + release notes

Author: jnaulet

README.md

@@ -134,6 +134,7 @@ at the following address: https://jnaulet.github.io/OpenPicoRTOS
  - Intel 8051 / MCS51
  - MIPS M51xx / PIC32Mx
  - RISC-V RV32IMAC
+ - RISC-V RV32EC
  - PowerPC e200z4
  - PowerPC e200z7
  - TI C2000 / c28x
@@ -172,6 +173,7 @@ at the following address: https://jnaulet.github.io/OpenPicoRTOS
  - STMicroelectronics STM32F401x series
  - STMicroelectronics STM32H743/750
  - Texas Instruments TMS320F2837xD
+ - WCH CH32V003
 
 ## Working principle
 
@@ -264,6 +266,7 @@ Basic demo code is provided for the following boards:
   - STMicro STM32F401RCT6 development board (staging)
   - Texas Instruments Launchxl-f28379d
   - Raspberry Pi Pico (single core & SMP)
+  - WCH CH32V003F4P6 eval board (staging)
 
 A portability demo is available in demo/amigaball-lcd and works with the
 follwing boards (+0.96" LCD):

RELEASE_NOTES.md

@@ -1,5 +1,24 @@
 # Release notes
 
+## picoRTOS v1.9.7
+### What's new ?
+
+Minor update, support for a new architecture:
+
+    - RISC-V: support for RV32EC + WCH CH32V003
+    - CH32V003 minimal drivers (clock, mux, gpio) + demo
+
+## picoRTOS v1.9.6
+### What's new ?
+
+This is a minor update, but kinda major in some ways.
+
+    - 8051: improved architecture + clock management system(s)
+    - AVR: total refactoring of the ports (merged ATMegza & ATTiny) + associated demos
+    - STM32F10xxx: support for a new ARMV7-M machine + minimal drivers (clock, mux, gpio)
+    - STM32F401x: support for new ARMv7e-M machine + minimal drivers (clock)
+    - Refactoring of DMA setup in existing SPI drivers (to match +irqdriven naming conventions)
+
 ## picoRTOS v1.9.5
 ### What's new ?