K 10
svn:author
V 3
ian
K 8
svn:date
V 27
2018-06-28T22:13:32.407364Z
K 7
svn:log
V 371
When being verbose about various leapfile versions, also mention expiration.

The expiration date is actually more of a version number than the version
date, because expiration changes twice a year, whereas the version only
changes when actual leap second events occur (except in USNO leapfiles,
which inappropriately bump the version with every expiration date change).

END