Version 1.16
~~~~~~~~~~~~
* Moving into NRAO sites directory
* difxarch: David Gordon added Mark4 support
* db2vex: leap second correctness
* Version for DiFX-2.2.  Tagged June 1, 2013

Version 1.15
~~~~~~~~~~~~
* Post DiFX-2.0.1
* Version for DiFX-2.1.  Tagged May 4, 2012

Version 1.14
~~~~~~~~~~~~
* Version for DiFX-2.0.1.  Tagged June 12, 2011

Version 1.13
~~~~~~~~~~~~
* Lots of fixes
* Version for DiFX-1.5.3

Version 1.12
~~~~~~~~~~~~
* DiFX-1.5 version
* Sign flip on $CLOCK value to match vex convention
* getvex: retrieve uncompressed cal.vlba files
* don't truncate clocks at antenna on-source times
* Tagged for DiFX-1.5.2 version