first public version, minor fixes

src/commonMain/kotlin/net.sergeych.superlogin/client/SuperloginClient.kt

@@ -292,8 +292,8 @@ class SuperloginClient<D, S : WithAdapter>(
                     } else null
                 }
             } catch (t: Throwable) {
-                t.printStackTrace()
-                throw t
+                debug { "error while signign in: $t" }
+                null
             }
         }
     }

src/jvmTest/kotlin/net/sergeych/WsServerKtTest.kt

@@ -157,6 +157,7 @@ internal class WsServerKtTest {
                 slc.register("foo", "passwd", TestData("nobar"))
             }
             slc.logout()
+            assertFalse{ slc.isLoggedIn }
             assertNull(slc.dataKey)
             assertIs<LoginState.LoggedOut>(slc.state.value)
             assertEquals(null, slc.call(api.loginName))