Revert to Ably service wire protocol 1.0.

This is because we need this SDK to take advantage of service-side support for automatic presence re-entry, because RTP17c (client-led automatic re-entry) is yet to be implemented in this SDK.
This is a temporary patch until we fix this properly under #859

lib/src/main/java/io/ably/lib/transport/Defaults.java

@@ -8,7 +8,7 @@
 import java.util.Locale;
 
 public class Defaults {
-    public static final float ABLY_VERSION_NUMBER   = 1.1f;
+    public static final float ABLY_VERSION_NUMBER   = 1.0f;
 
     /**
      * The level of compatibility with the Ably service that this SDK supports, also referred to as the 'wire protocol version'.

lib/src/test/java/io/ably/lib/test/realtime/RealtimeHttpHeaderTest.java

@@ -81,7 +81,7 @@ public void realtime_websocket_param_test() {
              * Defaults.ABLY_VERSION_PARAM, as ultimately the request param has been derived from those values.
              */
             assertEquals("Verify correct version", requestParameters.get("v"),
-                    Collections.singletonList("1.1"));
+                    Collections.singletonList("1.0"));
 
             /* Spec RSC7d3
              * This test should not directly validate version against Defaults.ABLY_AGENT_VERSION, nor

lib/src/test/java/io/ably/lib/test/rest/HttpHeaderTest.java

@@ -84,7 +84,7 @@ public void header_lib_channel_publish() {
              * from those values.
              */
             Assert.assertNotNull("Expected headers", headers);
-            Assert.assertEquals(headers.get("x-ably-version"), "1.1");
+            Assert.assertEquals(headers.get("x-ably-version"), "1.0");
             Assert.assertEquals(headers.get("ably-agent"), expectedAblyAgentHeader);
         } catch (AblyException e) {
             e.printStackTrace();

lib/src/test/java/io/ably/lib/transport/DefaultsTest.java

@@ -9,7 +9,7 @@ public class DefaultsTest {
 
     @Test
     public void versions() {
-        assertThat(Defaults.ABLY_VERSION, is("1.1"));
+        assertThat(Defaults.ABLY_VERSION, is("1.0"));
     }
 
     @Test