Updated README and test for resolve function.

README.md

@@ -180,6 +180,7 @@ For convenience, a web front-end on top of the command-line tool is available at
 
 ### v3.0.0-dev (2023-??-??)
  - Results from concurrent scans against multiple hosts are no longer improperly combined; bug discovered by [Adam Russell](https://github.com/thecliguy).
+ - Hostname resolution failure no longer causes scans against multiple hosts to terminate unexpectedly; credit [Dani Cuesta](https://github.com/daniel-cues).
  - Added 1 new key exchange: `curve448-sha512@libssh.org`.
 
 ### v2.9.0 (2023-04-29)

test/test_resolve.py

@@ -22,12 +22,12 @@ class TestResolve:
         vsocket.gsock.addrinfodata['localhost#22'] = socket.gaierror(8, 'hostname nor servname provided, or not known')
         conf = self._conf()
         s = self.ssh_socket(self.OutputBuffer(), 'localhost', 22, conf.ip_version_preference)
-        output_spy.begin()
-        with pytest.raises(SystemExit):
+        # output_spy.begin()
+        with pytest.raises(socket.gaierror):
             list(s._resolve())
-        lines = output_spy.flush()
-        assert len(lines) == 1
-        assert 'hostname nor servname provided' in lines[-1]
+        # lines = output_spy.flush()
+        # assert len(lines) == 1
+        # assert 'hostname nor servname provided' in lines[-1]
 
     def test_resolve_hostname_without_records(self, output_spy, virtual_socket):
         vsocket = virtual_socket