This helper Makefile is supposed to unify finding folders with
applications that can be built.

net/nanocoap: add generic handling for string-based options

dist/tools/compile_test: fix flake8 issues

vfs/stdio: cleanup STDIO mapping for vfs

edbg.inc.mk: allow flashing with an offset in rom without erasing all ROM

 doc: refactor `hashes` group

- add generic string put and get functions
- add location path and location query options
- add dedicated functions for getting and setting
  URI query, URI path, location query, and location path
  options

boards/stm32f103c8: fix openocd config

make: Introduce periph_gpio_irq feature

core: Mark openocd info variables read-only

cpu/cortexm_common/cortexm_init: Allow piecewise calling

   Refactor cortexm_init to allow bits and pieces of
   it to be called separately, while retaining the
   current API, too.  Needed for non-standard
   Cortex-M initialisation, such as with nRF52
   SoftDevice.

boards: slstk3402a: add docs

frdm-kw41z: Clean up ADC configuration

drivers: Add missing dependencies

drivers*: add drivers with saul support in the doxygen drivers_saul group