Bump version for development.

configure.ac

 # gstreamer-vaapi package version number
 m4_define([gst_vaapi_major_version], [0])
 m4_define([gst_vaapi_minor_version], [2])
-m4_define([gst_vaapi_micro_version], [12])
-m4_define([gst_vaapi_pre_version],   [0])
+m4_define([gst_vaapi_micro_version], [13])
+m4_define([gst_vaapi_pre_version],   [1])
 m4_define([gst_vaapi_version],
           [gst_vaapi_major_version.gst_vaapi_minor_version.gst_vaapi_micro_version])
 m4_if(gst_vaapi_pre_version, [0], [], [