Prepare for 2.6.2 release.

CHANGELOG.md

-# Changes in version 2.6.2 - 2019-05-??
+# Changes in version 2.6.2 - 2019-05-29
 
  * Medium changes
    - Recognize bandwidth files with @type annotation.

build.xml

@@ -6,7 +6,7 @@
 
 <project default="usage" name="metrics-lib" basedir=".">
 
-  <property name="release.version" value="2.6.1-dev" />
+  <property name="release.version" value="2.6.2" />
   <property name="javadoc-title" value="Tor Metrics Library API Documentation"/>
   <property name="javadoc-excludes" value="**/impl/** **/index/** **/internal/** **/log/**" />
   <property name="implementation-title" value="Tor Metrics Library" />