diff --git a/pom.xml.releaseBackup b/pom.xml.releaseBackup
deleted file mode 100644
index 39a14c5..0000000
--- a/pom.xml.releaseBackup
+++ /dev/null
@@ -1,116 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-    <modelVersion>4.0.0</modelVersion>
-    <groupId>ua.net.uid</groupId>
-    <artifactId>uid.tools</artifactId>
-    <version>1.0.1-SNAPSHOT</version>
-    <packaging>jar</packaging>
-    
-    <licenses>
-        <license>
-            <name>ASL</name>
-            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
-            <distribution>repo</distribution>
-        </license>
-    </licenses>
-    
-    <dependencies>
-        <dependency>
-            <groupId>org.junit.jupiter</groupId>
-            <artifactId>junit-jupiter-engine</artifactId>
-            <version>5.5.1</version>
-            <scope>test</scope>
-        </dependency>
-            
-        <dependency>
-            <groupId>com.h2database</groupId>
-            <artifactId>h2</artifactId>
-            <version>[1.4.193, 1.5.0)</version>
-            <scope>test</scope>
-        </dependency>
-    </dependencies>
-    
-    <build>
-        <resources>
-            <resource>
-                <directory>.</directory>
-                <includes>
-                    <include>LICENSE</include>
-                    <include>NOTICE.txt</include>
-                    <include>RELEASE.txt</include>
-                </includes>
-            </resource>
-        </resources>
-        
-        <plugins>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.8.0</version>
-                <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
-                    <showDeprecation>true</showDeprecation>
-                </configuration>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-surefire-plugin</artifactId>
-                <version>2.22.2</version>
-            </plugin>
-            <plugin>
-                <artifactId>maven-failsafe-plugin</artifactId>
-                <version>2.22.2</version>
-            </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-release-plugin</artifactId>
-                <version>2.5.3</version>
-                <configuration>
-                    <autoVersionSubmodules>true</autoVersionSubmodules>
-                    <tagNameFormat>@{project.version}</tagNameFormat>
-                    <!--releaseProfiles>release</releaseProfiles-->
-                    <useReleaseProfile>false</useReleaseProfile>
-                </configuration>
-            </plugin>            
-        </plugins>
-    </build>
-    
-    <properties>
-        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.8</maven.compiler.source>
-        <maven.compiler.target>1.8</maven.compiler.target>
-        <project.scm.id>uid-releases</project.scm.id>
-    </properties>
-    
-    <repositories>
-        <repository>
-            <id>ua.net.uid-releases</id>
-            <url>https://git.uid.net.ua/maven/releases/</url>
-        </repository>
-        <repository>
-            <id>ua.net.uid-snapshots</id>
-            <url>https://git.uid.net.ua/maven/snapshots/</url>
-        </repository>
-    </repositories>
-    
-    <scm>
-        <connection>scm:git:https://git.uid.net.ua/git/uid/uid.tools.git</connection>
-        <developerConnection>scm:git:https://git.uid.net.ua/git/uid/uid.tools.git</developerConnection>
-        <url>https://git.uid.net.ua/git/uid/uid.tools.git</url>
-      <tag>HEAD</tag>
-  </scm>
-    
-    <distributionManagement>
-        <repository>
-            <id>uid-releases</id>
-            <name>Release repository</name>
-            <url>https://git.uid.net.ua/maven/releases/</url>
-        </repository>
-        <snapshotRepository>
-            <id>uid-snapshots</id>
-            <name>Snapshots repository</name>
-            <url>https://git.uid.net.ua/maven/snapshots/</url>
-        </snapshotRepository>
-    </distributionManagement>
-</project>
\ No newline at end of file
diff --git a/release.properties b/release.properties
deleted file mode 100644
index dd20bf4..0000000
--- a/release.properties
+++ /dev/null
@@ -1,20 +0,0 @@
-#release configuration
-#Fri Sep 27 18:54:45 EEST 2019
-scm.commentPrefix=[maven-release-plugin] 
-project.scm.ua.net.uid\:uid.tools.tag=HEAD
-pushChanges=true
-project.dev.ua.net.uid\:uid.tools=1.0.2-SNAPSHOT
-project.scm.ua.net.uid\:uid.tools.url=https\://git.uid.net.ua/git/uid/uid.tools.git
-scm.tag=1.0.1
-remoteTagging=true
-projectVersionPolicyId=default
-scm.id=uid-releases
-scm.url=scm\:git\:https\://git.uid.net.ua/git/uid/uid.tools.git
-scm.tagNameFormat=@{project.version}
-preparationGoals=clean verify
-project.scm.ua.net.uid\:uid.tools.developerConnection=scm\:git\:https\://git.uid.net.ua/git/uid/uid.tools.git
-exec.snapshotReleasePluginAllowed=false
-project.scm.ua.net.uid\:uid.tools.connection=scm\:git\:https\://git.uid.net.ua/git/uid/uid.tools.git
-project.scm.ua.net.uid\:uid.tools.id=uid-releases
-completedPhase=end-release
-project.rel.ua.net.uid\:uid.tools=1.0.1