setup logging properly, remove log4j dependencies

pom.xml

@@ -72,11 +72,6 @@
             <artifactId>logback-classic</artifactId>
             <version>1.5.6</version>
         </dependency>
-        <dependency>
-            <groupId>org.slf4j</groupId>
-            <artifactId>slf4j-log4j12</artifactId>
-            <version>2.0.13</version>
-        </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>

src/main/resources/logback.xml

@@ -8,11 +8,21 @@
         </layout>
     </appender>
 
+    <appender name="FILE" class="ch.qos.logback.core.FileAppender">
+        <file>log/log_out</file>
+        <append>true</append>
+        <immediateFlush>true</immediateFlush>
+        <encoder>
+            <pattern>%d %p %c %m%n</pattern>
+        </encoder>
+    </appender>
+
     <logger name="com.mykola2312" level="debug" additivity="false">
         <appender-ref ref="CONSOLE"/>
+        <appender-ref ref="FILE"/>
     </logger>
 
-    <root level="error">
+    <root level="debug">
         <appender-ref ref="CONSOLE"/>
     </root>
 </configuration>