sortinto now just for forwarding the sort

Renamed it to _realsortinto
Merge branch 'master' into testing
Got rid of --precision

Since it's no longer an option and doesn't make sense.
comment, header, blank

Untested new functionality
objectives only

For testing the "all columns are objectives" and "unspecified
epsilons" cases, as well as the error condition where the wrong
number of epsilons is specified.
Merge branch 'master' into testing
More tests

Each of these tests out fine.  Need also to test that errors are
still errors.
Oh, wait, tests fail

Doesn't look like input filter is happening
Filter_input works

missing yield, else statements
Merge branch 'master' into testing
Now includes all the right flags.
Explain what's going on here.