Improved factor support for assert_includes() and
assert_excludes()
Added assert_connection()
Added assert_set_equal()
Added assert_one_of()
Added assert_scalar()
Added missing assert_less_than()
assertions.
Added assert_null() and
assert_non_null()
Added assert_length()
Improved error messages when assert_create()
arguments are inappropriate
NEWS.md file to track changes to the
package.