Update NEWS.md

correct old argument name

prepare new 2.9-6 release

prepare 2.9-5 release

changing license reference elsewhere in the code

add motivation why the term sedentary behaviour is not used #764

update Actiwatch with file with at least 1000 lines

prepare release 2.9-1

storefolderstructure functionality part 2 now consistent with part 5

correct mistake in previous commit