Mock Android Log to fix PeerManager tests (#239)

app/src/test/kotlin/android/util/Log.kt

@@ -0,0 +1,28 @@
+@file:JvmName("Log")
+
+package android.util
+
+fun d(tag: String, msg: String): Int {
+    println("DEBUG: $tag: $msg")
+    return 0;
+}
+
+fun e(tag: String, msg: String): Int {
+    println("ERROR: $tag: $msg")
+    return 0;
+}
+
+fun w(tag: String, msg: String): Int {
+    println("WARN: $tag: $msg")
+    return 0;
+}
+
+fun v(tag: String, msg: String): Int {
+    println("VERBOSE: $tag: $msg")
+    return 0;
+}
+
+fun i(tag: String, msg: String): Int {
+    println("INFO: $tag: $msg")
+    return 0;
+}

app/src/test/kotlin/com/bitchat/PeerManagerTest.kt

@@ -3,7 +3,6 @@ package com.bitchat
 import com.bitchat.android.mesh.PeerManager
 import junit.framework.TestCase.assertEquals
 import org.junit.Test
-import kotlin.text.appendLine
 
 
 class PeerManagerTest {