etl

f4df8881 - Merge remote-tracking branch 'origin/development'

Merge remote-tracking branch 'origin/development' # Conflicts: # include/etl/cstring.h # include/etl/u16string.h # include/etl/u32string.h # include/etl/version.h # include/etl/wstring.h # library.json # library.properties # support/Release notes.txt