更新默认主词典；

src/main/java/org/wltea/analyzer/cfg/DefaultConfig.java

@@ -41,7 +41,7 @@ public class DefaultConfig implements Configuration {
     /*
      * 分词器默认字典路径
      */
-    private static final String PATH_DIC_MAIN = "dict/magese.dic";
+    private static final String PATH_DIC_MAIN = "dict/main_dic_2020.dic";
     private static final String PATH_DIC_QUANTIFIER = "dict/quantifier.dic";
 
     /*
@@ -55,7 +55,7 @@ public class DefaultConfig implements Configuration {
     // 配置属性——扩展停止词典
     private static final String EXT_STOP = "ext_stopwords";
 
-    private Properties props;
+    private final Properties props;
 
     // 是否使用smart方式分词
     private boolean useSmart;