Tests of the convex hull function were failing. Needed to break up long input lines for some tests.
A few more .gitignores for files generated when the test program DejaGnu runs.
Added an update link for #240
Merge remote-tracking branch 'origin/master'
Fixed up some failing tests in the unit/ directory. Failures came from still using the old "herd" terminology.
Update chain is done except that update_status(True) never gets called anywhere.  It should call this once when the program starts. #240
Merge remote-tracking branch 'origin/master'
Merge branch 'master' into Windows
Added update check in startup for #240