Store and exchange client minor versions.

These don't affect client visibility.

briar-api/src/main/java/org/briarproject/briar/api/blog/BlogManager.java

@@ -26,6 +26,11 @@ public interface BlogManager {
 	 */
 	int MAJOR_VERSION = 0;
 
+	/**
+	 * The current minor version of the blog client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Adds the given {@link Blog).}
 	 */

briar-api/src/main/java/org/briarproject/briar/api/blog/BlogSharingManager.java

@@ -14,4 +14,9 @@ public interface BlogSharingManager extends SharingManager<Blog> {
 	 * The current major version of the blog sharing client.
 	 */
 	int MAJOR_VERSION = 0;
+
+	/**
+	 * The current minor version of the blog sharing client.
+	 */
+	int MINOR_VERSION = 0;
 }

briar-api/src/main/java/org/briarproject/briar/api/forum/ForumManager.java

@@ -27,6 +27,11 @@ public interface ForumManager {
 	 */
 	int MAJOR_VERSION = 0;
 
+	/**
+	 * The current minor version of the forum client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Subscribes to a forum.
 	 */

briar-api/src/main/java/org/briarproject/briar/api/forum/ForumSharingManager.java

@@ -14,4 +14,9 @@ public interface ForumSharingManager extends SharingManager<Forum> {
 	 * The current major version of the forum sharing client.
 	 */
 	int MAJOR_VERSION = 0;
+
+	/**
+	 * The current minor version of the forum sharing client.
+	 */
+	int MINOR_VERSION = 0;
 }

briar-api/src/main/java/org/briarproject/briar/api/introduction/IntroductionManager.java

@@ -30,6 +30,11 @@ public interface IntroductionManager extends ConversationClient {
 	 */
 	boolean canIntroduce(Contact c1, Contact c2) throws DbException;
 
+	/**
+	 * The current minor version of the introduction client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Sends two initial introduction messages.
 	 */

briar-api/src/main/java/org/briarproject/briar/api/messaging/MessagingManager.java

@@ -23,6 +23,11 @@ public interface MessagingManager extends ConversationClient {
 	 */
 	int MAJOR_VERSION = 0;
 
+	/**
+	 * The current minor version of the messaging client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Stores a local private message.
 	 */

briar-api/src/main/java/org/briarproject/briar/api/privategroup/PrivateGroupManager.java

@@ -26,6 +26,11 @@ public interface PrivateGroupManager {
 	 */
 	int MAJOR_VERSION = 0;
 
+	/**
+	 * The current minor version of the private group client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Adds a new private group and joins it.
 	 *

briar-api/src/main/java/org/briarproject/briar/api/privategroup/invitation/GroupInvitationManager.java

@@ -30,6 +30,11 @@ public interface GroupInvitationManager extends ConversationClient {
 	 */
 	int MAJOR_VERSION = 0;
 
+	/**
+	 * The current minor version of the private group invitation client.
+	 */
+	int MINOR_VERSION = 0;
+
 	/**
 	 * Sends an invitation to share the given private group with the given
 	 * contact, including an optional message.