VERSION bump version to 0.8.42
VERSION bump version to 0.8.42

cumulative merge of internal bugfixes and improvements from devel branch (0.9.4)

lukasmacko/libyang,PavolVican/libyang,PavolVican/libyang,lukasmacko/libyang,PavolVican/libyang,PavolVican/libyang,PavolVican/libyang