setDefaultKSLog and KSLog#plus(KSLog)

src/commonMain/kotlin/KSLog.kt

@@ -110,3 +110,5 @@ fun KSLog(
 ).filtered { l, _, _ ->
     minLoggingLevel.ordinal <= l.ordinal
 }
+
+fun setDefaultKSLog(newDefault: KSLog) { KSLog.default = newDefault }

src/commonMain/kotlin/utils/Combination.kt

@@ -0,0 +1,9 @@
+package dev.inmo.kslog.common.utils
+
+import dev.inmo.kslog.common.CallbackKSLog
+import dev.inmo.kslog.common.KSLog
+
+infix operator fun KSLog.plus(other: KSLog) = CallbackKSLog { l, t, m, e ->
+    this@plus.performLog(l, t, m, e)
+    other.performLog(l, t, m, e)
+}