support for @Unsigned fields and fox bad error of kotlinjs x is Float glitch: it returns true for integers

src/commonMain/kotlin/net.sergeych.bintools/DataSink.kt

@@ -25,11 +25,7 @@ interface DataSink {
 }
 
 inline fun <reified T:Any>DataSink.writeNumber(value: T) {
-    when(value) {
-        is Float -> writeFloat(value)
-        is Double -> writeDouble(value)
-        else -> Smartint.encode(value, this)
-    }
+    Smartint.encode(value, this)
 }
 
 fun DataSink.writeI32(value: Int) {