News for dump/writelock change
doc: whitespace cleanup

Changed one tab in doc/man1/notmuch-show.rst to 8 spaces.

Removed one leading tab in doc/man5/notmuch-hooks.rst to make
the SYNOPSIS style consistent with other pages.
cli: notmuch address option defaults update

When no --output option were given, change default to display senders
only.

When only --count option is given, display senders (in contrary to not
displaying anything).

Document that --count with --sort=**order** is not supported option
combination.

Clean up some whitespace in the documentation.

One test updated to have --output=count without sender nor recipient
output option.