v10.4.3

FreeRTOS 10.4.3

Updates and bugfixes:
- Corrected timeout handling in osThreadFlagsWait (#50)
- Enable full static memory allocation for timer object (#48)
- Fix vQueueAddToRegistry function call issue when arguments are NULL (#49)
- Added workaround for xEventGroupClearBitsFromISR no yield problem
- Added FreeRTOS kernel state check to osKernelInitialize and osKernelState
- Make source code more verbose with documented limitations (#41)
- Fix osMemoryPoolNew expression use (#42)