Start development for next version

Author: zhangt2333

README.md

@@ -85,7 +85,7 @@ For Gradle:
 
 ```kotlin
 dependencies {
-    implementation("net.pascal-lab:tai-e:0.5.1")
+    implementation("net.pascal-lab:tai-e:0.5.2")
 }
 ```
 
@@ -97,7 +97,7 @@ For Maven:
     <dependency>
         <groupId>net.pascal-lab</groupId>
         <artifactId>tai-e</artifactId>
-        <version>0.5.1</version>
+        <version>0.5.2</version>
     </dependency>
 </dependencies>
 ```
@@ -113,7 +113,7 @@ repositories {
 }
 
 dependencies {
-    implementation("net.pascal-lab:tai-e:0.5.2-SNAPSHOT")
+    implementation("net.pascal-lab:tai-e:0.5.4-SNAPSHOT")
 }
 ```
 
@@ -132,7 +132,7 @@ For Maven:
     <dependency>
         <groupId>net.pascal-lab</groupId>
         <artifactId>tai-e</artifactId>
-        <version>0.5.2-SNAPSHOT</version>
+        <version>0.5.4-SNAPSHOT</version>
     </dependency>
 </dependencies>
 ```

gradle.properties

@@ -5,6 +5,6 @@ org.gradle.configuration-cache=true
 # project-related properties
 projectGroupId=net.pascal-lab
 projectArtifactId=tai-e
-projectVersion=0.5.2
+projectVersion=0.5.4-SNAPSHOT
 projectUrl=https://github.com/pascal-lab/Tai-e
 projectDescription=An easy-to-learn/use static analysis framework for Java