refs #35 refac to get caching out of Obj; it is decoder/encoder matter now

lynglib/src/commonMain/kotlin/net/sergeych/lynon/LynonDecoder.kt

@@ -39,9 +39,8 @@ open class LynonDecoder(val bin: BitInput, val settings: LynonSettings = LynonSe
         type.objClass.deserialize(scope, this, type)
     }
 
-    // todo: rewrite/remove?
-    suspend fun unpackObject(scope: Scope, type: ObjClass): Obj {
-        return type.deserialize(scope, this, null)
+    suspend fun decodeObject(scope: Scope, type: ObjClass): Obj {
+        return decodeCached {  type.deserialize(scope, this, null) }
     }
 
     fun unpackBinaryData(): ByteArray = bin.decompress()

lynglib/src/commonMain/kotlin/net/sergeych/lynon/LynonEncoder.kt

@@ -65,8 +65,10 @@ open class LynonEncoder(val bout: BitOutput, val settings: LynonSettings = Lynon
         bout.putBits(type.ordinal.toULong(), 4)
     }
 
-    suspend fun encodeObj(scope: Scope, obj: Obj) {
+    suspend fun encodeObject(scope: Scope, obj: Obj) {
+        encodeCached(obj) {
             obj.serialize(scope, this, null)
+        }
     }
 
     fun encodeBinaryData(data: ByteArray) {