Bump up version to 0.3

lm2343635 · lm2343635 · commit 74f2cccbab3f · 2020-10-11T01:01:52.000+09:00
diff --git a/pluto-kotlin-client-sdk/build.gradle b/pluto-kotlin-client-sdk/build.gradle
@@ -5,7 +5,7 @@ apply plugin: 'maven-publish'
 
 buildscript {
     ext.versionCode = 11
-    ext.versionName = '0.2.4'
+    ext.versionName = '0.3'
 }
 
 android {
