Wikitty 3.10 发布，此版本更新内容如下：
adds a new select function to get the year of a date
changes the data upgrade process
adds a new method to WikittyClient and BusinessHelper to remove an extension easily
Wikitty now uses SolR 4.1
solrconfig.xml has been cleaned up.
The select implementation have been changed to do only one solr request
New methods are supported in the query language
WikittyQueryResult has been improved. Wikitty now supports relative dates for String date representation
This version also fixes a bug corrupting the solr index when using multiple instances on the same data file.
Wikitty 是一个 Java 开发的 key/value 存储和搜索系统。