Increment version to 2.1.3-beta1

HISTORY

@@ -2,6 +2,9 @@
 nmxptool Release History
 #########################
 
+* Release 2.1.3-beta1    (2015/06/26) 
+    - ...
+
 * Release 2.1.2    (2015/06/26) 
     - Fixed major bug in small time drifting of packets stored in mini-SEED format.
     - Started to fix 'Ubuntu vs. gettimeofday()' issue

configure.ac

@@ -9,9 +9,9 @@ m4_define([full_package_name], [nmxptool])
 dnl These three define the plug-in version number
 m4_define([major_version], [2])
 m4_define([minor_version], [1])
-m4_define([micro_version], [2])
+m4_define([micro_version], [3])
 # Comment build_version for stable release
-# m4_define([build_version], [rc2])
+m4_define([build_version], [beta1])
 
 m4_ifdef([build_version], [
 	  m4_define([version],