The following list of known issues apply to this release:
Fixes and Changes
[4446](https://github.com/ARMmbed/mbed-os/pull/4446)
Customer port verification tests for cellular
[4531](https://github.com/ARMmbed/mbed-os/pull/4531)
Update branching option to branch from another branch.
[4672](https://github.com/ARMmbed/mbed-os/pull/4672)
Cellular: not-supported error if MODEM_ON_BOARD not defined
[4468](https://github.com/ARMmbed/mbed-os/pull/4468)
Put quotes around include files
[4685](https://github.com/ARMmbed/mbed-os/pull/4685)
Rename runnig_thread to running_thread in rtx_mutex
[4163](https://github.com/ARMmbed/mbed-os/pull/4163)
STM32L486RG/mbedtls: add aes hw acceleration
[4659](https://github.com/ARMmbed/mbed-os/pull/4659)
Add the correct startup s file in TARGET_STM32F767
[4215](https://github.com/ARMmbed/mbed-os/pull/4215)
Add script to lint targets.json
[4711](https://github.com/ARMmbed/mbed-os/pull/4711)
added the missing verbose=verbose to printout the command line correctly at build_api.py
[4710](https://github.com/ARMmbed/mbed-os/pull/4710)
Correct a typo in the github issue template
[4636](https://github.com/ARMmbed/mbed-os/pull/4636)
Double escape defines in gnuarmeclipse export
[4635](https://github.com/ARMmbed/mbed-os/pull/4635)
_acquire() function added & removed duplication in format/freq calls
[4548](https://github.com/ARMmbed/mbed-os/pull/4548)
Resolve Warnings for mbed-os-examples
[4547](https://github.com/ARMmbed/mbed-os/pull/4547)
Sort the config parameters before printing them
[4546](https://github.com/ARMmbed/mbed-os/pull/4546)
Fix bad test print and move locks for printf into macro.
[4599](https://github.com/ARMmbed/mbed-os/pull/4599)
Update timing tests to be robust
[4720](https://github.com/ARMmbed/mbed-os/pull/4720)
FlashIAP: Add explicit read function to flash_api.h
[4525](https://github.com/ARMmbed/mbed-os/pull/4525)
Improve the startup code on the STM32F070
[4561](https://github.com/ARMmbed/mbed-os/pull/4561)
fatfs: Add full support for multiple fs volume prefixes
[4674](https://github.com/ARMmbed/mbed-os/pull/4674)
Fix LED4 for UBLOX_EVK_NINA_B1
[4749](https://github.com/ARMmbed/mbed-os/pull/4749)
tools: fix toolchain extend inc paths
[4747](https://github.com/ARMmbed/mbed-os/pull/4747)
Remove unused header files includes for REALTEK_RTL8195AM
[4736](https://github.com/ARMmbed/mbed-os/pull/4736)
NRF52832: Extend idle thread stack size to 512 bytes.
[4707](https://github.com/ARMmbed/mbed-os/pull/4707)
STM32: serial: use proper macro to check interrupt
[4699](https://github.com/ARMmbed/mbed-os/pull/4699)
STM32L0 : internal ADC channels
[4694](https://github.com/ARMmbed/mbed-os/pull/4694)
DISCO_L475VG_IOT01A: typo corrections in PeripheralPins.c
[4693](https://github.com/ARMmbed/mbed-os/pull/4693)
Nordic: Fix multiple defined symbol.
[4691](https://github.com/ARMmbed/mbed-os/pull/4691)
STM32: F4: Increase ADC sampling time for VBAT
[4677](https://github.com/ARMmbed/mbed-os/pull/4677)
Increase default PPP stack size from 512 bytes to 768 bytes.
[4668](https://github.com/ARMmbed/mbed-os/pull/4668)
DISCO/NUCLEO_F429ZI: Enable all alternate functions and pins
[4667](https://github.com/ARMmbed/mbed-os/pull/4667)
Update and mute debug messages of REALTEK_TRL8195AM
[4666](https://github.com/ARMmbed/mbed-os/pull/4666)
Fix timing issues found in "Flash - clock and cache test"
[4652](https://github.com/ARMmbed/mbed-os/pull/4652)
fatfs: Fix unaligned access in disk_ioctl
[4592](https://github.com/ARMmbed/mbed-os/pull/4592)
[ONME-3089] - Adjust lowpan ND interface connect timeout
[4634](https://github.com/ARMmbed/mbed-os/pull/4634)
Fix the issue #4357: NRF52 doesn't support simultaneous use of I2C and SPI.
[4725](https://github.com/ARMmbed/mbed-os/pull/4725)
Parse and use custom targets in exporters
