Bumping KOS version on master branch to 2.3.0.

- We introduced an API-breaking change to genwait(), which makes it now
  take one less argument on master.
- The problem is that master is versioned at 2.2.2, which has the
  genwait() change, but SO IS the v2.2.x branch, which does NOT have the
  genwait change.
- We need to introduce a minor version bump into master to be able to
  version properly within our codebase (Ocarina of Time) like so:

static void WaitForVBlank(void) {
    /* +3 = 20 FPS (matching N64 original), +2 = 30, +1 = 60, +0 = uncapped */
    while (sVblCounter < sLastVbl + 3)
        genwait_wait((void*)&sVblCounter, NULL, 0, NULL);
        genwait_wait((void*)&sVblCounter, NULL, 0);

    sLastVbl = sVblCounter;
}

** This version bump just means the next tagged release will be v2.3.0,
but we are not actually tagging that release yet, just bumping the
version here. **

Author: gyrovorbis

include/kos/version.h

@@ -98,8 +98,8 @@
 */
 
 #define KOS_VERSION_MAJOR   2   /**< KOS's current major revision number. */
-#define KOS_VERSION_MINOR   2   /**< KOS's current minor revision number. */
-#define KOS_VERSION_PATCH   2   /**< KOS's current patch revision number. */
+#define KOS_VERSION_MINOR   3   /**< KOS's current minor revision number. */
+#define KOS_VERSION_PATCH   0   /**< KOS's current patch revision number. */
 
 /** KOS's current version as an integer ID. */
 #define KOS_VERSION \