version: answer 1.7 to head units offering 4.x and 6.x too, as they accept it

gearslip/src/main/java/app/seb3thehacker/gearslip/ProtocolVersion.kt

@@ -1,6 +1,10 @@
 package app.seb3thehacker.gearslip
 
-/** Advertises our supported 1.x version, as Android Auto does for older head units. */
+/**
+ * Advertises our supported 1.x version, as Android Auto does for older head units. Head units that
+ * offer a newer major version (LIVI asks for 6.1, a RAV4 and the DHU for 4.2) still accept a 1.x
+ * answer, so only a major version of 0 is refused.
+ */
 internal object ProtocolVersion {
     data class Response(val major: Int, val minor: Int, val supported: Boolean) {
         val bytes: ByteArray get() = byteArrayOf(
@@ -9,5 +13,5 @@ internal object ProtocolVersion {
         )
     }
 
-    fun respond(major: Int, minor: Int): Response = Response(1, 7, major == 1 && minor in 0..0xffff)
+    fun respond(major: Int, minor: Int): Response = Response(1, 7, major >= 1 && minor in 0..0xffff)
 }